Overclocking a Xeon x5670 on an Asus p6t?
Hey, I just purchased a xeon x5670 to replace my old i7 930 (lga 1366), so I can keep my motherboard and extend it’s lifespan a little longer. it’s an asus p6t, no deluxe version, no special edition, just the p6t model.
I’ve read a few overclocking guides, but there are many small details that I can’t keep up with. at one end, I read a guide where I just had to enable something, dial the multiplier and get going, while at the other end, another guide made very little specific changes to different voltages that I just couldn’t get a clue what those meant. I’ve seen a few guides between those two, and many guides for different or slightly different motherboards, with different settings, so for me it’s still very confusing, and that’s the reason I’m asking for help here.
my cpu cooler is a noctua nh-d14, wich is the bigger/better that would have clearance for my ram dimms, and fit into my case, a nzxt s340. it has plenty airflow, I replaced the stock fans with 2 corsair af-140 as intakes, one af-140 as top exhaust, and one 120mm corsair fan as back exhaust, wich I took from my carbide air 240 case at work. my room temperature is never above 20ºC, and currently the cpu package is idling at 32ºc.
so I think I should have plenty headroom to do a decent overclock, just need some directions.
thanks in advance
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OC i7 920 w/ Asus P6T Deluxe V2
Hi everyone,
I’m starting to OC my CPU, trying to understand what I’m really doing. I’m tired of just imputing values in the BIOS without having any idea what they mean. For that, I’ve been doing some reading, especially in this topic: http://www.overclock.net/t/538439/guide-to-overclocking-the-core-i7-920-or-930-to-4-0ghz.
My system is the following:
— Intel Core i7-920 2.66 GHz D0
— Noctua NH-U12P SE2
— Asus P6T Deluxe V2
— G.skill Ripjaws Series 6GB (3 x 2GB) DDR3 1600 (PC3 12800)
— MSI GeForce GTX 970 Gaming 4G
— Corsair HX750W
I use 2 Noctua NF-A14 FLX and a Noctua NF-P14 redux-1200 as intakes and the Fractal Design stock fan that came with the case as the exhaust. I’m using MX-2 thermal paste from Artic. The heatsink was seated only a couple of days ago.
With the CPU stock, I get around 37-41 ºC in idle and mid 60’s under Prime95 load (I’m doing the Small FFTs test).
I’ve got a D0 chip.
I got my CPU to the following state last night:
This was taken with Hyperthreading DISABLED. My idle temperatures, as you can see, are around 47-51 ºC.
In the thread I’ve mentioned above, the OP advises to disable HT when the CPU is getting too hot on load. I did that and brought my temperatures from 80-85 ºC to 70-75 ºC under load on Prime95.
My first question is, do I really take advantage of the HT when playing or do I only need it when I’m working on 3D for example? If it’s like this, I think I prefer to save a lighter OC on my BIOS profile so that I can run with HT enabled when I need to work. Otherwise, HT would be off for playing.
Now, with HT disabled I can get this thing to 4.2 GHz. Notice that I haven’t run Prime95 for 24 hours. I’m just experimenting by now. When I raised my BCLK to 210 the system won’t get to windows and just restarts (1.35 v). These are the results I get with this clock:
My temperatures just stall around 75 ºC about 10 minutes into the test.
They don’t seem to go any further even if I left the test running for a couple of hours.
I guess I need to ask, what can I assume as safe temperatures for the i7 920 on Prime95? Can I only remain for 70-75 ºC under load? I think I’ve read somewhere that if doesn’t pass 80-85 ºC it’s fine.
This were the settings I’ve used in the A.I. Tweaker:
One thing that’s bugging me is that I’m using 1.35 as my CPU voltage. Every other thing is running in «Auto» as you can see. I notice that when I bump the BCLK Frequency to 210 it gets unstable and reboots before entering Win10. Maybe it would need more voltage. My problem is that I read that ~1.4 v should be the maximum limit but ASUS states that it’s something like 1.375 v. So, should I bump my CPU voltage a little higher to try and reach 4.4 GHz?
Another question: is it advisable to define any more voltages manually? If it’s possible to go up in the OC I’d like to try it. If I need to use any other manual voltages where do you guys recomend me to start? And with what values? This is a great problem for me because in the guide I followed, the OP starts to change some voltages but I don’t know why he chose those values.
In the guide the OP talks about Vcore (VID), Vdimm and QPI/Uncore (VTT). Well my MB, as you can see, has CPU Voltage, CPU PLL Voltage and QPI/DRAM Core Voltage. I don’t know how the OP’s terms relate to my MB settings. I only understood that Vcore is labeled CPU Voltage in my BIOS. Where do the other relate?
This is why I left all the other voltages in «Auto». Not knowing if I’m touching the right setting annoys me.
I’ve manually entered my RAM CAS latency values:
I chose to use 6x DRAM Frequency multiplier for now. Also the UCLK Frequency is 2x my DRAM Frequency.
Can I raise my DRAM Frequency, at least, to their original 1600 MHz or should I keep this low for now? I really don’t know why a 8x multiplier or higher can cause instability.
This is my CPU configuration. Following the thread mentioned in the beginning of this post I’ve set this settings accordingly:
So, am I doing anything wrong? I’m kind of worried of leaving many voltages being managed automatically by the CPU.
The problem is that I need help to understand which of them to change and why am I changing them. Playing with the ratios to achieve a specific clock is not hard. My problem is using manual voltages and tweaking them down until I maintain stability and reduce temperatures and power.
I really don’t have any certainty in what I’m doing. But if this thing can go above 4.0 GHz safely I want it. Notice that I haven’t run proper Prime95 tests. I still don’t know if it can even perform stable at 4.0 GHz. I’m just trying to make it stable at 4.2 GHz for the time being. If I need to lower the clock I will. It amazes me that I can get 10 ºC lower just by disabling HT and thus giving me even more temperature room to raise my BCLK.
I’m sorry for the long thread. I love to learn new things but I really need to understand what I’m doing. I thank for any guidance you guys can give me.
Thank you for reading.
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90,000 characteristics, prices and purchase, acceleration and work with Xeon
Content
- 1 characteristics
- 2 Acceleration
- 3 minuses
- 4 Buying and price
A rather tempting model from ASUS -P6T SE, is slightly stripped down version of Asus p6t. The board was released during the heyday of socket 1366 and cost quite a lot then.
Now its use is relevant with Xeon server processors, which show quite good, even by today’s standards, performance.
9000 9000
Maternker has everything necessary for comfortable work as a comfortable work as a comfort processors of the Core I7 family, and with Xeon. It is worth noting as many as 8 phases of the processor power supply and a pretty good cooling system, which includes not only radiators, but also a heat pipe connecting them. True, the cooling of the southbridge could be better, but the temperature remains within the acceptable range even under heavy load.
The number of ports is slightly less than in the older model (the fdd port and several sata are missing), but it is quite enough for home use.
It’s nice to see as many as 3 pci-e x16 slots, but, unfortunately, they cannot work with Nvidia SLI technology, only ATI CrossFireX. But 6 RAM slots can work both in two and three-channel mode. Officially, the maximum RAM size is 24 gigabytes, but, as with most other boards on the 1366 socket, there is a very good chance of working with 8 gigabytes of sticks. Thus, you can get up to 48 gigabytes of RAM.
Overclocking
I am very pleased with the overclocking potential of this board. Flexible BIOS settings allow you to adjust many parameters in detail, which will achieve excellent results and seriously increase system performance. The familiar AMI bios of this board can adjust:
- processor multiplier
- pci-e bus frequency
- RAM and its controller frequency
- QPI bus frequency
- memory timings, and separately for each slot
- voltages of the processor, memory and all bridges