Intel Core i9 9900K vs i7 6700K: performance comparison
VS
Intel Core i9 9900K
Intel Core i7 6700K
We compared two desktop CPUs: the 3.6 GHz Intel Core i9 9900K with 8-cores against the 4.0 GHz i7 6700K with 4-cores. On this page, you’ll find out which processor has better performance in benchmarks, games and other useful information.
- Review
- Differences
- Performance
- Specs
- Comments
Review
General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Core i9 9900K
60
Core i7 6700K
51
Performance
Measure performance when all cores are involved
Core i9 9900K
45
Core i7 6700K
22
Power Efficiency
The efficiency score of electricity consumption
Core i9 9900K
45
Core i7 6700K
41
NanoReview Final Score
Generic CPU rating
Core i9 9900K
51
Core i7 6700K
38
Key Differences
What are the key differences between 6700K and 9900K
Advantages of Intel Core i9 9900K
- Has 4 more physical cores
- Has 8 MB larger L3 cache size
- Supports up to 128 GB DDR4-2666 RAM
- Newer — released 3-years and 3-months later
- 19% higher Turbo Boost frequency (5 GHz vs 4.
2 GHz)
- Around 7.5 GB/s (22%) higher theoretical memory bandwidth
- 16% faster in a single-core Geekbench v5 test — 1277 vs 1097 points
Advantages of Intel Core i7 6700K
- Consumes up to 4% less energy than the Core i9 9900K – 91 vs 95 Watt
Benchmarks
Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
Core i9 9900K
+19%
1336
Core i7 6700K
1121
Cinebench R23 (Multi-Core)
Core i9 9900K
+121%
12421
Core i7 6700K
5630
Passmark CPU (Single-Core)
Core i9 9900K
+17%
2924
Core i7 6700K
2505
Passmark CPU (Multi-Core)
Core i9 9900K
+107%
18478
Core i7 6700K
8922
Geekbench 5 (Single-Core)
Core i9 9900K
+16%
1271
Core i7 6700K
1095
Geekbench 5 (Multi-Core)
Core i9 9900K
+97%
8453
Core i7 6700K
4293
▶️ Submit your Cinebench R23 result
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This does not affect our assessment methodology.
Specifications
Full technical specification of Intel Core i9 9900K and i7 6700K
General
| Vendor | Intel | Intel |
| Released | October 8, 2018 | August 5, 2015 |
| Type | Desktop | Desktop |
| instruction set | x86-64 | x86-64 |
| Codename | Coffee Lake | Skylake |
| Model number | i9-9900K | i7-6700K |
| Socket | LGA-1151 | LGA-1151 |
| Integrated GPU | UHD Graphics 630 | HD Graphics 530 |
Performance
| Cores | 8 | 4 |
| Threads | 16 | 8 |
| Base Frequency | 3. 6 GHz |
4.0 GHz |
| Turbo Boost Frequency | 5 GHz | 4.2 GHz |
| Bus frequency | 100 MHz | 100 MHz |
| Multiplier | 36x | 40x |
| Bus Bandwidth | 8 GT/s | 8 GT/s |
| L1 Cache | 64K (per core) | 64K (per core) |
| L2 Cache | 256K (per core) | 256K (per core) |
| L3 Cache | 16MB (shared) | 8MB (shared) |
| Unlocked Multiplier | Yes | Yes |
| Transistors | — | 1.75 billions |
| Fabrication process | 14 nm | 14 nm |
| TDP | 95 W | 91 W |
Max. temperature |
100°C | — |
| Integrated Graphics | Intel UHD Graphics 630 | Intel HD Graphics 530 |
| GPU Base Clock | 350 MHz | — |
| GPU Boost Clock | 1200 MHz | 1150 MHz |
| Shading Units | 192 | — |
| TMUs | 24 | — |
| ROPs | 3 | — |
| Execution Units | 24 | — |
| TGP | 15 W | — |
| Max. Resolution | 4096×2304 — 60 Hz | — |
iGPU FLOPS
Core i9 9900K
0.38 TFLOPS
Core i7 6700K
n/a
Memory support
| Memory types | DDR4-2666 | DDR4-2133, DDR3L-1600 |
| Memory Size | 128 GB | 64 GB |
Max. Memory Channels |
2 | 2 |
| Max. Memory Bandwidth | 41.6 GB/s | 34.1 GB/s |
| ECC Support | No | No |
| Official site | Intel Core i9 9900K official page | Intel Core i7 6700K official page |
| PCI Express Version | 3.0 | 3.0 |
| PCI Express Lanes | 16 | 16 |
| Extended instructions | SSE4.1, SSE4.2, AVX-2 | SSE4.1, SSE4.2, AVX-2 |
Cast your vote
Choose between two processors
Core i9 9900K
19 (63.3%)
Core i7 6700K
11 (36.7%)
Total votes: 30
ompetitors
1.
Apple M1 Max and Intel Core i9 9900K
2.
Intel Core i7 13700K and Intel Core i9 9900K
3.
AMD Ryzen 7 7700X and Intel Core i9 9900K
4.
AMD Ryzen 9 7950X and Intel Core i9 9900K
5.
Intel Core i7 12700K and Intel Core i7 6700K
6.
Intel Core i5 12400F and Intel Core i7 6700K
So which CPU will you choose: Intel Core i7 6700K or i9 9900K?
Name
Message
Promotion
Core i9-9900K vs Core i7-6700K
Availability
Intel Core i9-9900K Desktop Processor 8 Cores up to 5.0 GHz Turbo Unlocked LGA1151 300 Series 95W
Buy on Amazon
$510
In Stock
Updated 13 minutes ago
Availability
Intel Core i7-6700K
Buy on Amazon
$250
In Stock
Updated 13 minutes ago
Key Differences
In short — Core i9-9900K outperforms the cheaper Core i7-6700K on the selected game parameters.
However, the worse performing Core i7-6700K is a better bang for your buck. The better performing Core i9-9900K is 1175 days newer than the cheaper Core i7-6700K.
Advantages of Intel Core i9-9900K
Advantages of Intel Core i7-6700K
-
Up to 51% cheaper than Core i9-9900K — $250.0 vs $510.0
-
Up to 46% better value when playing VALORANT than Core i9-9900K — $0.56 vs $1.04 per FPS
-
Consumes up to 4% less energy than Intel Core i9-9900K — 91 vs 95 Watts
VALORANT
Resolution
1920×1080
Game Graphics
High
Core i9-9900K
Desktop • Oct 19th, 2018
FPS
491
100%
Value, $/FPS
$1.04/FPS
14%
Price, $
$510
49%
FPS Winner
Intel Core i9-9900K Desktop Processor 8 Cores up to 5.0 GHz Turbo Unlocked LGA1151 300 Series 95W
Buy for $510 on Amazon
In Stock
Updated 13 minutes ago
Core i7-6700K
Desktop • Aug 1st, 2015
FPS
446
90%
Value, $/FPS
$0.
56/FPS
100%
Price, $
$250
100%
Value Winner
Intel Core i7-6700K
Buy for $250 on Amazon
In Stock
Updated 13 minutes ago
Resolution
1920×1080
Game Graphics
High
Core i9-9900K
Desktop • Oct 19th, 2018
Core i7-6700K
Desktop • Aug 1st, 2015
692
FPS
627
FPS
Counter-Strike: Global Offensive
282
FPS
255
FPS
Grand Theft Auto V
1494
FPS
1365
FPS
Minecraft
491
FPS
446
FPS
VALORANT
1123
FPS
1023
FPS
League of Legends
Geekbench 5 Benchmarks
Core i9-9900K
Desktop • Oct 19th, 2018
Single-Core
1305
100%
Multi-Core
8481
100%
Core i7-6700K
Desktop • Aug 1st, 2015
Single-Core
1135
85%
Multi-Core
4429
9%
|
Intel Core i9-9900K |
vs |
Intel Core i7-6700K |
|---|---|---|
|
Oct 19th, 2018 |
Release Date | Aug 1st, 2015 |
| Core i9 | Collection | Core i7 |
| Coffee Lake | Codename | Skylake |
| Intel Socket 1151 | Socket | Intel Socket 1151 |
|
Desktop |
Segment |
Desktop |
|
8 |
Cores | 4 |
|
16 |
Threads | 8 |
3. 6 GHz |
Base Clock Speed |
4.0 GHz |
|
5.0 GHz |
Turbo Clock Speed | 4.2 GHz |
| 95 W | TDP |
91 W |
| 14 nm | Process Size | 14 nm |
| 36.0x | Multiplier |
40.0x |
| UHD 630 | Integrated Graphics | HD Graphics 530 |
|
Yes |
Overclockable | No |
Builds Using Core i9-9900K or Core i7-6700K
VALORANT, 1080p, High
CYBERPOWERPC Gamer Xtreme Gaming PC
280
FPS
$
8.57
/FPS
GeForce RTX 2060
Core i9-9900K
16 GB, 1 TB SSD
Buy on Amazon
$2,398.96
In Stock
Updated 11 minutes ago
CyberpowerPC Gamer Supreme Liquid Cool Gaming PC
409
FPS
$
11.