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Geforce GTX 770 vs Radeon HD 7950

Intro

The Geforce GTX 770 features a clock frequency of 1046 MHz and a GDDR5 memory frequency of 1753 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It features 1536 SPUs, 128 TAUs, and 32 Raster Operation Units.

Compare all that to the Radeon HD 7950, which has core speeds of 800 MHz on the GPU, and 1250 MHz on the 1536 MB of GDDR5 RAM. It features 1792 SPUs as well as 112 Texture Address Units and 32 ROPs.

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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

Theoretically speaking, the Radeon HD 7950 will be 7% faster than the Geforce GTX 770 overall, because of its greater data rate. (explain)

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

Texel Rate

The Geforce GTX 770 should be much (about 49%) more effective at anisotropic 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 a lot (approximately 31%) faster with regards to full screen anti-aliasing than the Radeon HD 7950, and will be able to handle higher screen resolutions better. (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 data (in units of MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory 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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