Folding@Home: Nvidia GTX 1080 Review Part 3: Memory Speed
In the last article, I investigated how the power limit setting on an Nvidia Geforce GTX 1080 graphics card could affect the card’s performance and efficiency for doing charitable disease research in the Folding@Home distributed computing project. The conclusion was that a power limit of 60% offers only a slight reduction in raw performance (Points Per Day), but a large boost in energy efficiency (PPD/Watt). Two articles ago, I looked at the effect of GPU core clock. In this article, I’m experimenting with a different variable. Namely, the memory clock rate.
The effect of memory clock rate on video games is well defined. Gamers looking for the highest frame rates typically overclock both their graphics GPU and Memory speeds, and see benefits from both. For computation projects like Stanford University’s Folding@Home, the results aren’t as clear. I’ve seen arguments made both ways in the hardware forums. The intent of this article is to simply add another data point, albeit with a bit more scientific rigor.
The Test
To conduct this experiment, I ran the Folding@Home V7 GPU client for a minimum of 3 days continuously on my Windows 10 test computer. Folding@Home points per day (PPD) numbers were taken from Stanford’s Servers via the helpful team at https://folding.extremeoverclocking.com. I measured total system power consumption at the wall with my P3 Kill A Watt meter. I used the meter’s KWH function to capture the total energy consumed, and divided out by the time the computer was on in order to get an average wattage value (thus eliminating a lot of variability). The test computer specs are as follows:
Test Setup Specs
- Case: Raidmax Sagitta
- CPU: AMD FX-8320e
- Mainboard : Gigabyte GA-880GMA-USB3
- GPU: Asus GeForce 1080 Turbo
- Ram: 16 GB DDR3L (low voltage)
- Power Supply: Seasonic X-650 80+ Gold
- Drives: 1x SSD, 2 x 7200 RPM HDDs, Blu-Ray Burner
- Fans: 1x CPU, 2 x 120 mm intake, 1 x 120 mm exhaust, 1 x 80 mm exhaust
- OS: Win10 64 bit
- Video Card Driver Version: 372.
90
I ran this test with the memory clock rate at the stock clock for the P2 power state (4500 MHz), along with the gaming clock rate of 5000 MHz and a reduced clock rate of 4000 MHz. This gives me three data points of comparison. I left the GPU core clock at +175 MHz (the optimum setting from my first article on the 1080 GTX) and the power limit at 100%, to ensure I had headroom to move the memory clock without affecting the core clock. I verified I wasn’t hitting the power limit in MSI Afterburner.
*Update. Some people may ask why I didn’t go beyond the standard P0 gaming memory clock rate of 5000 MHz (same thing as 10,000 MHz double data rate, which is the card’s advertised memory clock). Basically, I didn’t want to get into the territory where the GDDR5’s error checking comes into play. If you push the memory too hard, there can be errors in the computation but work units can still complete (unlike a GPU core overclock, where work units will fail due to errors). The reason is the built-in error checking on the card memory, which corrects errors as they come up but results in reduced performance.
By staying away from 5000+ MHz territory on the memory, I can ensure the relationship between performance and memory clock rate is not affected by memory error correction.
Memory Overclocking Performed in MSI Afterburner
Tabular Results
I put together a table of results in order to show how the averaging was done, and the # of work units backing up my +500 MHz and -500 MHz data points. Having a bunch of work units is key, because there is significant variability in PPD and power consumption numbers between work units. Note that the performance and efficiency numbers for the baseline memory speed (+0 MHz, aka 4500 MHz) come from my extended testing baseline for the 1080 and have even more sample points.
Nvidia GTX 1080 Folding@Home Production History: Data shows increased performance with a higher memory speed
Graphic Results
The following graphs show the PPD, Power Consumption, and Efficiency curves as a function of graphics card memory speed. Since I had three points of data, I was able to do a simple three-point-curve linear trendline fit.
The R-squared value of the trendline shows how well the data points represent a linear relationship (higher is better, with 1 being ideal). Note that for the power consumption, the card seems to have used more power with a lower memory clock rate than the baseline memory clock. I am not sure why this is…however, the difference is so small that it is likely due to work unit variability or background tasks running on the computer. One could even argue that all of the power consumption results are suspect, since the changes are so small (on the order of 5-10 watts between data points).
Conclusion
Increasing the memory speed of the Nvidia Geforce GTX 1080 results in a modest increase in PPD and efficiency, and arguably a slight increase in power consumption. The difference between the fastest (+500 MHz) and slowest (-500 MHz) data points I tested are:
PPD: +81K PPD (11.5%)
Power: +9.36 Watts (3.8%)
Efficiency: +212.8 PPD/Watt (7.4%)
Keep in mind that these are for a massive difference in ram speed (5000 MHz vs 4000 MHz).
Another way to look at these results is that underclocking the graphics card ram in hopes of improving efficiency doesn’t work (you’ll actually lose efficiency). I expect this trend will hold true for the rest of the Nvidia Pascal series of cards (GTX 10xx), although so far my testing of this has been limited to this one card, so your mileage may vary. Please post any insights if you have them.
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This entry was posted in Computer Efficiency, GPUs, PPD/Watt and tagged distributed computing, Efficiency, F@H, Folding@home, GTX 1080, PPD, PPD/Watt. Bookmark the permalink.
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Nvidia GTX 1080 Ti Overclocking Anleitung (Stock Kühler) (de)
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GTX 1080 Ti Overclocking Guide: Getting Down To Numbers
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08.08.2017 · Before getting too far along, after opening MSI Afterburner make sure to set an aggressive fan profile and proceed with setting the Power Limit …
NVIDIA GTX 1080 Ti Overclocking Guide
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08.08.2017 · The second video solely focus on the overclocking part and how-to with MSI Afterburner software found on the second page. As always, if you find …
GTX 1080 Ti Overclock — Anfänger — PCGH Extreme
extreme.pcgameshardware.de › … › Grafikkarten
28.09.2018 · Lass nebenbei einfach mal GPU-Z, HwInfo64 oder MSI Afterburner (mit Riva Tuner Statistics Server auch sehr zu empfehlen) mitlaufen.
GTX 1080 wie stabil? | Die Hardware-Community für PC-Spieler
GTX 1080 Ti Over/Undervolting + Overclocking — PCGH Extreme
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[Question] Typical MSI Afterburner settings for a 1080Ti … — Reddit
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16.04.2018 · ‘ I wanted to ask, what are some good guidelines as to overclocking the card? It’s paired with a 7700K under liquid cooling, in a case with …
Highest safe clock speed for GTX 1080 ti? : r/overclocking — Reddit
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24.07.2018 · Wenn du in Afterburner den Power Regler auf Anschlag hämmerst, kommen eh nur 1.093V max an. Das ist halt ein Limit von NV. Das Powerlimit und …
Nvidia GeForce overclocking the GTX 1080ti — Evil’s Personal Palace
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Reset MSI Afterburner and dial in the settings from the default curve as shown above. Make sure the GPU is below 40c so it will use the default curve. Open the …
MSI GTX 1080 Ti GAMING X Review — Overclocking The Graphics …
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29.03.2017 · Overclocking The Graphics Card · Core Voltage : +100 · Power Limit : 120% · Temp. limit : 90C · Core Clock : + 75 · Memory Clock : +650 MHz (=12.3 …
[Official] NVIDIA GTX 1080 Ti Owner’s Club | Page 927 — Overclock.net
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Use MSI Afterburner regardless of your card’s brand. Slide Power Limit and Temp limit to max. Set fans to max or at least use the default fan curve in …
How do you overclock a GTX 1080 on MSI Afterburner? — Quora
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Your safest bet here is to cramp the power up to 120%, slide the core/memory speed to +100MHz and after that, increase the core by a little bit and memory speed .
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Gtx 1080 is not chasing | MiningClub.info
Aka_prorok
Dancing with a tambourine
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#1
Others help with advice.
There is a zoo rig.
4*1080 jetstream
1* Asus strix
1*msiai
1* zotak amp
hashes on kefir.
2050 for the core and 5250 for memory only on the way.
On mt 6.
2 sinister msiai and zotak are not subject to overclocking (((they work in stock and everything touched the memory the worker fell off.
Pl change the core without problems, too, but the memory is only exclusively on the drain. , -100 dump, in general, any value is immediately dumped.What with the tablet or with the MT.It doesn’t matter.
What is it?The cards are tired or?
cjiab9h3017
Forum friend
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#2
Aka_prorok said:
Others help with advice.
There is a zoo rig.
4*1080 jetstream
1* Asus strix
1*msiai
1* zotak amp
hashes on kefir.
2050 for the core and 5250 for memory only on the way. On mt 6.
2 sinister msiai and zotak are not subject to overclocking (((they work in stock and everything touched the memory the worker fell off.
Pl change the core without problems, too, but the memory is only exclusively on the drain. , -100 back off, in general, any value is right there back off. What is with the tablet, what is with the MT. It does not matter.
What is it? Cards are tired or?Click to expand…
Well, maybe the memory is overheating, the gaskets are dry, disassemble, clean from dust, change the gaskets. I have 1080 turbo chasing 150/700 without problems
Kayzer
Forum friend
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#3
Tired old lady do maintenance
Swat333
Own person
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#4
try changing the thermal pads in memory.
space1982
Own person
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#5
Aka_prorok said:
2050 for the core and 5250 for memory only on the way. On mt 6.
Click to expand…
On which miner?
Aka_prorok
Dancing with a tambourine
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#6
Tirex is dripping.
Now I’m looking at them, the temperature is 52 degrees.
The most interesting thing when I turn down the frequency is also a dump ….
Walera
Own person
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#7
Do delayed acceleration at the rave and everything will be fine
Aka_prorok
Dancing with a tambourine
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#8
I change on the go.
…
That is, the rig started dripping hashes stabilized min 10 passes all the cards overclocked.
Then I will bring the pl up to 150 watts, the core is +100.
Cards accepted overclocking and square.
Another 2-3 minutes.
I put +1 to the memory of the rig blade ….
Aka_prorok
Dancing with a tambourine
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#9
Swat333 said:
try changing the thermal pads in memory.
Click to expand…
Why, then, can drip in the drain for a week? And if the memory is in — then also dump .
.
Aka_prorok
Dancing with a tambourine
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#10
And more interestingly, more than 5235, the memory does not want to rise on slabs, what’s the catch? In the hive, at least +2500, setting it above this frequency does not raise it. On an asus above 5450? Are there any restrictions or what?
Sergeybn
Knowledgeable
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#eleven
to b
Aka_prorok said:
Others help with advice.
There is a zoo rig.
4*1080 Jetstream
1* Asus Strix
1*Msiai
1* zotak amp
So, 4 palitas and asus pile in hive for 39 hashes on kefir.
2050 for the core and 5250 for memory only on the way. On mt 6.
2 sinister msiai and zotak are not subject to overclocking (((they work in stock and everything touched the memory the worker fell off.
Pl change the core without problems, too, but the memory is only exclusively on the drain. , -100 back off, in general, any value is right there back off. What with the tablet, what with the MT. It doesn’t matter.
What is it? The cards are tired or?Click to expand…
MSI worked fine for me only when I abandoned MSI Afterburner, and only on Nbminer with Tweak 5 (frequency 1949 and 5005 memory, 37.1 Mx). Overclocking only through nvidia inspector and only then launching the miner’s batch file.
Aka_prorok
Dancing with a tambourine
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#12
Sergeybn said:
According to b
MSI, they worked fine for me only when I abandoned MSI Afterburner, and only on Nbminer with Tweak 5 (frequency 1949 and 5005 memory, 37.
1Mx). Overclocking only through nvidia inspector and only then launching the miner’s batch file.
Click to expand…
I have no burner hive.
Cards are working now on the drain. At 120 watts 33.5 hashes. Core 1870 memory 4513. When raising or lowering the memory rig to the dump.
Swat333
Own person
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#13
10th generation I dug the norms on G miner + win 7 tablet until sold
Aka_prorok
Dancing with a tambourine
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#14
Swat333 said:
10th generation I dug norms on G miner + win 7 tablet until sold
Click to expand.
..
So here’s the funny thing is that 5 cards drip well, and 2 cards do not accept overclocking from memory
Evrey18
Experienced
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#15
Because the first revision, set memory overclocking and -60 delay before starting the tablet, reboot and everything will work
Aka_prorok
Dancing with a tambourine
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#16
Evrey18 said:
Because the first revision, set memory overclocking and -60 delay before starting the tablet, reboot and everything will work
Click to expand.
..
I’m on a Tirex with MT, what should I do there? Apply overclocking after the start of the miner?
Just how to do it in hive(
Evrey18
Experienced
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#17
Aka_prorok
Dancing with a tambourine
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#18
Well, this is with a pill, but I have a meme tweak
Evrey18
Experienced
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#19
Aka_prorok said:
I’m on a Tirex with MT, how can I be there? Apply overclocking after the start of the miner?
Just how to do it in hive(Click to expand.
..
Why do you need mt, with a tablet and overclocking norms, the speed will definitely not be lower. In general, break off, these cards are the only way
ValeriiRX
Own person
-
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#20
Aka_prorok said:
Others help with advice.
There is a zoo rig.
4*1080 Jetstream
1* Asus Strix
1*msiai
1* zotak amp
So, 4 Palit and Asus pile 39 hashes on kefir in hive.
2050 for the core and 5250 for memory only on the way. On mt 6.
2 sinister msiai and zotak are not subject to overclocking (((they work in stock and everything touched the memory the worker fell off.
Pl change the core without problems, too, but the memory is only exclusively on the drain. , -100 dump, in general, any value is immediately dumped.What with the pill, what with the MT. It doesn’t matter.
What is it? Are the cards tired or?Click to expand…
I have asus rog 1080ti working under Windows 10, 47-49 Mh / s with a tablet on ETH without problems, the temperature of the cards is 48-58 degrees, and there are two cards that give out a maximum of 44Mh / s when you drive the memory to -350 using Afnerburner. if you put +350 then the acceleration drops a lot, but there are no dumps.
The other day there was a problem, after a minute of work, one card began to throw off the hashrate in the miner to 0, the problem was solved by replacing the thermal paste.
How to overclock a video card
Evgeny Melnikov
February 16, 2020
For many video cards, the potential for overclocking the graphics chip and memory is provided by the manufacturer.
For example, let’s take the nVidia GeForce GTX 1080 Ti — not the newest, but still popular among gamers graphics card.
- Important point #1. Before you start overclocking, you need to make sure that the PC power supply has a power reserve. For example, the GTX 1080 Ti has a recommended wattage of 600W. Ideally, the power of the PSU should be higher — 650-700 W, since overclocking (i.e. overclocking) always increases the power consumption of the card.
- Important point #2. Some novice overclockers fear that the card may burn out during overclocking. Such an outcome is indeed possible — in the event that you carelessly increase the voltage on the GPU (Core Voltage). Therefore, at the initial stage, it is better to leave this parameter unchanged.
Programs that you need to overclock your video card
There are only three of them: GPU-Z, Afterburner and Fur Mark. All of them are free and downloaded from the official websites of manufacturers.
Let’s look at these utilities in the same order as the overclocking steps follow.
GPU-Z is a program that shows the technical characteristics of the video card, including the frequency of the GPU graphic chip (Core Clock) and the memory frequency (Memory Clock) — we will change them.
Photo: techpowerup.сom
The bottom line of Default Clock shows the standard frequency of the graphics chip, the top line — GPU Clock — overclocked. The same — with the lower and upper lines of memory (Memory). If the upper indicators differ from the lower ones, then the video card already has factory overclocking (our video card, as we see, does not have such). Factory overclocking can be reset using Afterburner. Well, or overclock the card even more.
MSI Afterburner is called the «gold standard for overclocking software».
Photo: msi.com
The first step after starting Afterburner is to increase the power supplied to the video card (Power Limit) so that the card can «pull» the increased frequencies.
The slider can be brought to the maximum.
Then we move on to overclocking. It is recommended to raise the Core Clock and Memory Clock values separately — this will make it easier to determine the overclocking limit for each of the modules. If a failure occurs due to an increase in the frequency of the GPU, say, by 250 MHz, it will be clear that this is precisely due to the manipulation of the frequency of the graphics chip.
Overclocking order
- You can start by increasing the GPU frequency. If the video card does not have factory overclocking, you can safely raise the frequency by 100-200 MHz. After clicking the Apply checkbox / button, you should make sure that the increase in frequency did not cause problems in the operation of the video card or the system — the computer did not turn off, there are no visual bugs, the screen does not blink or go out, the colors have not changed, etc. After that, you can try to raise frequency by another 50 MHz. If the video card is stable, you can proceed to the next step — stress testing using the Fur Mark utility.
- Fur Mark is one of the easiest and fastest benchmarks for stress testing video adapters.
Photo: ytimg.com
After starting the program, you need to watch how the overclocked video card performs the test. It is better to bring the temperature of the board to 80 degrees, this may take 10-15 minutes. If artifacts appear at this temperature or, which often happens, the video card driver fails, you need to reduce the frequency of the GPU.
If, after 15 minutes of testing, the video card shows stable operation, Core Clock can be further increased. In fact, overclocking the GPU and memory comes down to finding the upper frequency limit at which the video card works without failures.
- Fur Mark stress tests are best done first by separately increasing the Core Clock and Memory Clock frequencies, and then when both parameters are already increased at the same time. Then you can proceed to the final stage of testing on a demanding game — let’s say GTA V or Battlefield 1.
