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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7950 VTX3D 3GB Boost X-Edition Tesla K20X
Cyberpunk 2077 137% 126%
Red Dead Redemption 2 72% 64%
Dragon Ball Z Kakarot 6% 1%
Halo: Reach 45% 48%
Microsoft Flight Simulator 137% 126%
Call of Duty: Modern Warfare 72% 64%
FIFA 20 8% 12%
Doom Eternal 48% 41%
Grand Theft Auto VI 163% 151%
Need For Speed Heat 72% 64%

In terms of overall gaming performance, the graphical capabilities of the Nvidia Tesla K20X are marginally better than the AMD Radeon HD 7950 VTX3D 3GB Boost X-Edition.

The Tesla K20X was released less than a year after the HD 7950, and so they are likely to have similar driver support for optimizing performance when running the latest games.

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 Tesla K20X has 3072 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 Tesla K20X also has superior memory performance overall.

The Tesla K20X has 9.6 GB/sec greater memory bandwidth than the HD 7950, which means that the memory performance of the Tesla K20X is marginally better than the HD 7950.

The Radeon HD 7950 VTX3D 3GB Boost X-Edition has 1792 Shader Processing Units and the Tesla K20X has 2688. However, the actual shader performance of the HD 7950 is 1417 and the actual shader performance of the Tesla K20X is 1968. The Tesla K20X having 551 better shader performance is not particularly notable, as altogether the HD 7950 performs better when taking into account other relevant data.

The Tesla K20X requires 235 Watts to run but there is no entry for the HD 7950. We would recommend a PSU with at least 500 Watts for the HD 7950.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed880 MHzvs732 MHz
Boost Clock930 MHzvs-
ArchitectureGCN 1.0 Tahiti PRO2Kepler GK110
OC Potential Fair vs -
Driver Support Great vs Good
Release Date01 Aug 2012vs12 Nov 2012
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - green tick vs green tick -
green tick vs -
green tick vs -
green tick vs -
green tick vs -

GPU Memory

Memory3072 MBvs6144 MB
Memory Speed1250 MHzvs1300 MHz
Memory Bus384 Bitvs384 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth240GB/secvs249.6GB/sec
L2 Cache 768 KB vs green tick 1536 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units1792vs2688
Actual Shader Performance68%vs95%
Texture Mapping Units112vs-
Texture Rate98.6 GTexel/svs-
Render Output Units32vs-
Pixel Rate28.2 GPixel/svs-

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections1vs0
HDMI Connections1vs0
DisplayPort Connections-vs-

GPU Power Requirements

Max Power-235 Watts
Recommended PSU500 Watts-

GPU Features

Shader Model5.0vs5.0
Open GL4.4vs4.5
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3570K 3.4GHz-
Recommended RAM8 GB-
Maximum Recommended Gaming Resolution1920x1080-

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon HD 7950 VTX3D 3GB Boost X-Edition is a special edition of the high-end Radeon HD 7950 Boost Edition.
This edition comes with a custom cooling solution and overclocking out of the box in the core-clock that was increase by 30MHz to 880MHz. Therefore, the Turbo Boost is now of 930MHz.
Expect a 1.5% performance boost when compared to the reference Radeon HD 7950 Boost Edition.
Tesla K20X is a high-end professional GPU created for server purposes only.
It's designed to solve the most complex high performance computing problems out there and based on the Kepler GK110, featuring a CUDA Count core of 2688 but the drivers aren't certified for games. Therefore, even if Tesla K20X is powerful enough for even the most demanding games, it might not be compatible.
Tesla K20X is NVIDIA'S most powerful server solution as of November 2012 and still more efficient compared to the Fermi based Professional GPUs since the Kepler's Shaders are thrice as efficient as Fermi Shaders.
Its gaming performance is below GeForce GTX Titan due to being under-clocked and having no driver support for games.
Recommended CPU
Possible GPU Upgrades
GPU Variants