IntelBX80671I76950X
IntelBX80623I52500K
$246

10 Cores, 20 Threads @3.0GHz, Broadwell-E.
Release date: Q2 2016.

 $246 

4 Cores, 4 Threads @3.3GHz, Sandy Bridge.
Release date: Q1 2011.

Real World Speed
Performance profile from 149,142 user samples
6,135 User Benchmarks
Best Bench: 100% Base clock 3 GHz, turbo 4.55 GHz (avg)
Worst Bench: 77% Base clock 3 GHz, turbo 1.25 GHz (avg)
Poor: 77% Great: 100%
SPEED RANK: 171st / 1452
Gaming
Gaming 87%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 90%
Aircraft carrier
143,007 User Benchmarks
Best Bench: 79% Base clock 3.3 GHz, turbo 4.6 GHz (avg)
Worst Bench: 44% Base clock 3.3 GHz, turbo 0.5 GHz (avg)
Poor: 44% Great: 79%
SPEED RANK: 492nd / 1452
Gaming
Gaming 66%
Battle cruiser
Desktop
Desktop 72%
Battleship
Workstation
Workstation 49%
Yacht
Effective Speed
Effective CPU Speed
86.8 % Much faster effective speed.
+32%
65.9 %
Memory
Avg. Memory Latency
88.2 Pts Slightly lower memory latency.
+6%
83.1 Pts
1-Core
Avg. Single Core Speed
114 Pts Faster single-core speed.
+29%
88.4 Pts
2-Core
Avg. Dual Core Speed
228 Pts Much faster dual-core speed.
+31%
174 Pts
4-Core
Avg. Quad Core Speed
458 Pts Much faster quad-core speed.
+63%
281 Pts
8-Core
Avg. Octa Core Speed
884 Pts Hugely faster octa-core speed.
+195%
300 Pts
Memory
OC Memory Latency
95.9 Pts +1% 94.9 Pts
1-Core
OC Single Core Speed
142 Pts Faster OC single-core speed.
+25%
114 Pts
2-Core
OC Dual Core Speed
283 Pts Faster OC dual-core speed.
+25%
227 Pts
4-Core
OC Quad Core Speed
565 Pts Much faster OC quad-core speed.
+49%
380 Pts
8-Core
OC Octa Core Speed
1118 Pts Hugely faster OC octa-core speed.
+180%
399 Pts
Market Share
Based on 68,067,091 CPUs tested
Market Share
Market Share (trailing 30 days)
0.01 % 0.27 % Insanely higher market share.
+2,600%
Value
Value For Money
76.1 % Better value.
+12%
68.2 %
User Rating
UBM User Rating
62 % 76 % More popular.
+23%
Price
Price (score)
$449 $246 Much cheaper.
+45%
Age
Newest
96 Months Much more recent.
+40%
161 Months
TDP
Thermal Design Power (TDP)
140 Watts 95 Watts Much more energy efficient.
+32%
Cores
CPU Processing Cores
10 cores Hugely higher core count.
+150%
4 cores
Threads
CPU Processing Threads
20 threads Hugely higher thread count.
+400%
4 threads
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+56%
32 nm
Base Clock
Base Clock Speed
3 GHz 3.3 GHz Slightly faster base frequency.
+10%
Turbo Clock
Turbo Clock Speed
4 GHz Slightly faster turbo frequency.
+8%
3.7 GHz
64-Core
OC Multi Core Speed
1799 Pts Hugely faster OC 64-core speed.
+342%
407 Pts
64-Core
Avg. Multi Core Speed
1470 Pts Hugely faster 64-core speed.
+384%
304 Pts
Series
CPU Architecture
Broadwell-E Sandy Bridge
Socket
Motherboard Socket
LGA2011-V3 LGA1155
Graphics
Integrated Graphics
None HD 3000
Launch Date
Launch Date
Q2'16 Q1'11
Cache
Cache
25 MB 6 MB SmartCache
Lithography
Lithography
14 nm 32 nm
Max Turbo Frequency
Max Turbo Frequency
4 GHz 3.7 GHz
Max Memory Size
Max Memory Size (dependent on memory type)
128 GB 32 GB
Memory Types
Memory Types
DDR4 2400/2133 DDR3 1066/1333
Memory Channels
Max # of Memory Channels
4 2
Processor Graphics
Processor Graphics ‡
None Intel® HD Graphics 3000
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
Yes No
PCI Express Revision
PCI Express Revision
3.0 2.0
Max # of PCI Express Lanes
Max # of PCI Express Lanes
40 16

More specs » More specs »
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The Core i7-6950X is Intel’s new top of the range prosumer CPU. This flagship model has a whopping ten cores with base and turbo frequencies of 3.0 and 4.0 GHz respectively. The 6950X is based on the 14 nm Broadwell-E architecture. It has a TDP of 140 watts, 40 PCIe 3.0 lanes and no integrated graphics. Because of its ridiculously high MSRP of around $2,000, this CPU only makes sense for very niche use cases which could include top end graphics design or video production workstations. Comparing the 6950X and 6700K shows that for typical desktop use the 6950X only offers a gain of around 20% for a whopping 6 fold price increase. This is because desktop computing largely depends on single core performance and the Skylake i7-6700K is both clocked higher and has higher IPC due to its one generation lead over the 6950X. That said, if you want the most powerful desktop processor money can buy, then the 6950X hits the spot. [Jun '16 CPUPro]

MORE DETAILS

The i5-2500K is a second generation Sandy Bridge processor which is currently two generations old and nearly three years out of date. The many users that had the good sense to purchase this processor should feel in no hurry to upgrade as it's still no slouch, even by today's standards. The benchmark figures indicate that, even at stock clock rates, in terms of real-world performance this processor is approximately 20% slower than the best currently available, not bad considering its age. Given that the 2500K has an unlocked multiplier upping its performance by 10% with stock cooling should not pose much of a problem for the majority of owners. Here is a detailed performance comparison of the 2500K vs 4670K.  [Jul '13 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) June 2024 CPU Rankings

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]

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