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Geforce GTX 770 vs Radeon HD 7950 3GB

Intro

The Geforce GTX 770 has a GPU clock speed of 1046 MHz, and the 2048 MB of GDDR5 RAM runs at 1753 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon HD 7950 3GB, which uses a 28 nm design. AMD has set the core speed at 800 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this card. It features 1792 SPUs as well as 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.

Zcash Mining Hash Rate

Radeon HD 7950 3GB 229 Sol/s
Geforce GTX 770 70 Sol/s
Difference: 159 (227%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950 3GB 200 Watts
Geforce GTX 770 230 Watts
Difference: 30 Watts (15%)

Memory Bandwidth

Performance-wise, the Radeon HD 7950 3GB should theoretically be a small bit superior to the Geforce GTX 770 overall. (explain)

Radeon HD 7950 3GB 240000 MB/sec
Geforce GTX 770 224384 MB/sec
Difference: 15616 (7%)

Texel Rate

The Geforce GTX 770 is quite a bit (approximately 49%) better at AF than the Radeon HD 7950 3GB. (explain)

Geforce GTX 770 133888 Mtexels/sec
Radeon HD 7950 3GB 89600 Mtexels/sec
Difference: 44288 (49%)

Pixel Rate

The Geforce GTX 770 should be a lot (approximately 31%) faster with regards to anti-aliasing than the Radeon HD 7950 3GB, and able to handle higher screen resolutions while still performing well. (explain)

Geforce GTX 770 33472 Mpixels/sec
Radeon HD 7950 3GB 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 3GB

Amazon.com

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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 3GB
Manufacturer nVidia AMD
Year May 2013 January 2012
Code Name GK104 Tahiti Pro
Memory 2048 MB 3072 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: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 are processed per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at 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 can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Geforce GTX 770

Amazon.com

Check prices at:

Radeon HD 7950 3GB

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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