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Geforce GTX 780 vs Radeon HD 7950


The Geforce GTX 780 features a clock speed of 863 MHz and a GDDR5 memory frequency of 1502 MHz. It also makes use of a 384-bit bus, and uses a 28 nm design. It features 2304 SPUs, 192 Texture Address Units, and 48 ROPs.

Compare that to the Radeon HD 7950, which features clock speeds of 800 MHz on the GPU, and 1250 MHz on the 1536 MB of GDDR5 memory. It features 1792 SPUs as well as 112 TAUs and 32 ROPs.

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These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike

Geforce GTX 780 10052 points
Radeon HD 7950 7762 points
Difference: 2290 (30%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950 200 Watts
Geforce GTX 780 250 Watts
Difference: 50 Watts (25%)

Memory Bandwidth

Performance-wise, the Geforce GTX 780 should theoretically be a bit superior to the Radeon HD 7950 in general. (explain)

Geforce GTX 780 288384 MB/sec
Radeon HD 7950 240000 MB/sec
Difference: 48384 (20%)

Texel Rate

The Geforce GTX 780 is a lot (more or less 85%) more effective at texture filtering than the Radeon HD 7950. (explain)

Geforce GTX 780 165696 Mtexels/sec
Radeon HD 7950 89600 Mtexels/sec
Difference: 76096 (85%)

Pixel Rate

The Geforce GTX 780 should be much (approximately 62%) more effective at anti-aliasing than the Radeon HD 7950, and will be capable of handling higher resolutions better. (explain)

Geforce GTX 780 41424 Mpixels/sec
Radeon HD 7950 25600 Mpixels/sec
Difference: 15824 (62%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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Geforce GTX 780

Radeon HD 7950

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.


Display Specifications

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Model Geforce GTX 780 Radeon HD 7950
Manufacturer nVidia AMD
Year May 2013 January 2012
Code Name GK110 Tahiti Pro
Memory 3072 MB 1536 MB
Core Speed 863 MHz 800 MHz
Memory Speed 6008 MHz 5000 MHz
Power (Max TDP) 250 watts 200 watts
Bandwidth 288384 MB/sec 240000 MB/sec
Texel Rate 165696 Mtexels/sec 89600 Mtexels/sec
Pixel Rate 41424 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 2304 1792
Texture Mapping Units 192 112
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 384-bit
Fab Process 28 nm 28 nm
Transistors 7080 million 4313 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.3 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.


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