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Geforce GTX 770 vs Radeon HD 7950

Intro

The Geforce GTX 770 features a GPU core clock speed of 1046 MHz, and the 2048 MB of GDDR5 RAM runs at 1753 MHz through a 256-bit bus. It also is made up of 1536 SPUs, 128 TAUs, and 32 ROPs.

Compare those specifications to the Radeon HD 7950, which uses a 28 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 RAM runs at a frequency of 1250 MHz on this specific model. It features 1792 SPUs along with 112 Texture Address Units and 32 Rasterization Operator Units.

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Benchmarks

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 Graphics Score

Geforce GTX 770 7854 points
Radeon HD 7950 7731 points
Difference: 123 (2%)

Ethereum Mining Hash Rate

Radeon HD 7950 21 Mh/s
Geforce GTX 770 14 Mh/s
Difference: 7 (50%)

Zcash Mining Hash Rate

Radeon HD 7950 235 Sol/s
Geforce GTX 770 70 Sol/s
Difference: 165 (236%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950 200 Watts
Geforce GTX 770 230 Watts
Difference: 30 Watts (15%)

Memory Bandwidth

The Radeon HD 7950 should in theory be a bit faster than the Geforce GTX 770 overall. (explain)

Radeon HD 7950 240000 MB/sec
Geforce GTX 770 224384 MB/sec
Difference: 15616 (7%)

Texel Rate

The Geforce GTX 770 is a lot (more or less 49%) better at texture filtering than the Radeon HD 7950. (explain)

Geforce GTX 770 133888 Mtexels/sec
Radeon HD 7950 89600 Mtexels/sec
Difference: 44288 (49%)

Pixel Rate

The Geforce GTX 770 will be quite a bit (about 31%) more effective at full screen anti-aliasing than the Radeon HD 7950, and able to handle higher screen resolutions without slowing down too much. (explain)

Geforce GTX 770 33472 Mpixels/sec
Radeon HD 7950 25600 Mpixels/sec
Difference: 7872 (31%)

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 770

Amazon.com

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Radeon HD 7950

Amazon.com

Check prices at:

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.

Specifications

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Model Geforce GTX 770 Radeon HD 7950
Manufacturer nVidia AMD
Year May 2013 January 2012
Code Name GK104 Tahiti Pro
Memory 2048 MB 1536 MB
Core Speed 1046 MHz 800 MHz
Memory Speed 7012 MHz 5000 MHz
Power (Max TDP) 230 watts 200 watts
Bandwidth 224384 MB/sec 240000 MB/sec
Texel Rate 133888 Mtexels/sec 89600 Mtexels/sec
Pixel Rate 33472 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 1536 1792
Texture Mapping Units 128 112
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 384-bit
Fab Process 28 nm 28 nm
Transistors 3540 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: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at 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 can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Geforce GTX 770

Amazon.com

Check prices at:

Radeon HD 7950

Amazon.com

Check prices at:

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.

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