|Recommended System Requirements|
|Game||Radeon HD 6950 Crossfire||Radeon HD 7950 Vapor-X OC Edition|
|Watch Dogs 2||32%||40%|
|Need For Speed||39%||48%|
|Forza Horizon 3||79%||90%|
In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 6950 Crossfire are very slightly better than the AMD Radeon HD 7950 Vapor-X OC Edition.
The HD 7950 has a 100 MHz higher core clock speed than the HD 6950, but the HD 6950 has 64 more Texture Mapping Units than the HD 7950. As a result, the HD 6950 exhibits a 40 GTexel/s better Texture Fill Rate than the HD 7950. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.
The HD 7950 has a 100 MHz higher core clock speed than the HD 6950, but the HD 6950 has 32 more Render Output Units than the HD 7950. As a result, the HD 6950 exhibits a 22.4 GPixel/s better Pixel Fill Rate than the HD 7950. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.
The HD 7950 was released over a year more recently than the HD 6950, and so the HD 7950 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the HD 6950.
Both GPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings.
The HD 6950 has 1024 MB more video memory than the HD 7950, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the HD 6950 also has superior memory performance overall.
The HD 6950 has 80 GB/sec greater memory bandwidth than the HD 7950, which means that the memory performance of the HD 6950 is much better than the HD 7950.
The Radeon HD 6950 Crossfire has 2016 Shader Processing Units and the Radeon HD 7950 Vapor-X OC Edition has 1792. However, the actual shader performance of the HD 6950 is 1048 and the actual shader performance of the HD 7950 is 1371. The HD 7950 having 323 better shader performance is not particularly notable, as altogether the HD 6950 performs better when taking into account other relevant data.
The HD 7950 transistor size technology is 12 nm (nanometers) smaller than the HD 6950. This means that the HD 7950 is expected to run slightly cooler and achieve higher clock frequencies than the HD 6950.
The Radeon HD 6950 Crossfire requires 400 Watts to run but there is no entry for the Radeon HD 7950 Vapor-X OC Edition. We would recommend a PSU with at least 500 Watts for the HD 7950, but we do not have a recommended PSU wattage for the HD 6950.
Can I Run It
|Core Speed||800 MHz||vs||900 MHz|
|Architecture||Cayman Pro||GCN 1.0 Tahiti PRO|
|Release Date||01 Oct 2010||vs||01 Aug 2012|
|GPU Link||GD Link||GD Link|
|Memory||4096 MB||vs||3072 MB|
|Memory Speed||1250 MHz||vs||1250 MHz|
|Memory Bus||512 Bit||vs||384 Bit|
|L2 Cache||-||vs||768 KB|
|Delta Color Compression||no||vs||no|
|Shader Processing Units||2016||vs||1792|
|Actual Shader Performance||50%||vs||66%|
|Texture Mapping Units||176||vs||112|
|Texture Rate||140.8 GTexel/s||vs||100.8 GTexel/s|
|Render Output Units||64||vs||32|
|Pixel Rate||51.2 GPixel/s||vs||28.8 GPixel/s|
|Max Digital Resolution (WxH)||2560x1600||vs||4096x2160|
|Max Power||400 Watts||-|
|Recommended PSU||-||500 Watts|
|Recommended Processor||Intel Core i7-960 Quad 3.2GHz||vs||Intel Core i5-3570K 3.4GHz|
|Recommended RAM||8 GB||vs||8 GB|
|Maximum Recommended Gaming Resolution||1920x1080||vs||1920x1080|
|Mini Review||Radeon HD 6950 Crossfire is a solution of two Radeon HD 6950 put together using AMD'S Crossfire technology. |
Check the page of Radeon HD 6950 to know more about its chip.
Crossfire relies a lot on proper driver support and may suffer from micro-stuttering in lower frame rates (below 30). Benchmarks indicate the performance is overall, is up to x% better than a single Radeon HD 6950 performing by itself it might be worse (depending on whether or not the 3D game supports crossfire or in the graphics driver) than a single Radeon HD 6950. Expect this combination to draw up to 400 Watt though the average power consumption should be slightly lower.
Even the most demanding games will run at the highest settings.
|Radeon HD 7950 Vapor-X OC Edition is a special edition of the Radeon HD 7950. See the standard's version page to know more about it. |
The new features include a core-clock raise from 800MHz to 850MHz (900MHz in Turbo Boost) which can be of 950MHz in "lethal mode" (via BIOS). A new cooling system called Vapor-X was installed which should keep Radeon HD 7950's temperatures low under extreme loading.
The performance boost is around 4% and 7% when compared to standard Radeon HD 7950 in normal and lethal modes, respectively.
|Recommended CPU||AMD Phenom II X6 1035T|
AMD Athlon X4 880K
AMD APU A10-7890K Quad-Core
Intel Core i5-4570T 2.9GHz
|Intel Core i7-4785T 4-Core 2.2GHz|
Intel Xeon E5-2407 v2
Intel Core i5-4570 3.2GHz
Intel Core i5-4670S 3.1GHz
Intel Xeon Processor W3670
|Possible GPU Upgrades||GeForce GTX 770 Galaxy GC 2GB Edition|
Radeon R9 280X Sapphire Toxic 3GB OC Edition
Radeon R9 380X Sapphire Nitro 4GB Edition
Radeon R9 280X XFX Double D Black Edition
Radeon R9 280X Matrix Platinum 3GB Edition
|Radeon R9 390 Sapphire Nitro w/ Back Plate 8GB Edition|
Radeon R9 390 Asus DirectCU III OC Strix Gaming 8GB Edition
Radeon R9 290X PowerColor PCS+ 4GB Edition
Radeon R9 290X Asus ROG Matrix Platinum Edition
Radeon R9 290X Asus DirectCU II OC Edition