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Geforce GTX 770 vs Radeon HD 7970

Intro

The Geforce GTX 770 has a GPU clock speed of 1046 MHz, and the 2048 MB of GDDR5 memory is set to run at 1753 MHz through a 256-bit bus. It also is made up of 1536 SPUs, 128 Texture Address Units, and 32 ROPs.

Compare all of that to the Radeon HD 7970, which makes use of a 28 nm design. AMD has set the core frequency at 925 MHz. The GDDR5 RAM works at a frequency of 1375 MHz on this particular card. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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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

Radeon HD 7970 8207 points
Geforce GTX 770 7817 points
Difference: 390 (5%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 770 230 Watts
Radeon HD 7970 250 Watts
Difference: 20 Watts (9%)

Memory Bandwidth

In theory, the Radeon HD 7970 should perform a bit faster than the Geforce GTX 770 overall. (explain)

Radeon HD 7970 264000 MB/sec
Geforce GTX 770 224384 MB/sec
Difference: 39616 (18%)

Texel Rate

The Geforce GTX 770 should be a bit (about 13%) more effective at AF than the Radeon HD 7970. (explain)

Geforce GTX 770 133888 Mtexels/sec
Radeon HD 7970 118400 Mtexels/sec
Difference: 15488 (13%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 770 is superior to the Radeon HD 7970, though not by far. (explain)

Geforce GTX 770 33472 Mpixels/sec
Radeon HD 7970 29600 Mpixels/sec
Difference: 3872 (13%)

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

Radeon HD 7970

Amazon.com

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 7970
Manufacturer nVidia AMD
Year May 2013 January 2012
Code Name GK104 Tahiti XT
Memory 2048 MB 3072 MB
Core Speed 1046 MHz 925 MHz
Memory Speed 7012 MHz 5500 MHz
Power (Max TDP) 230 watts 250 watts
Bandwidth 224384 MB/sec 264000 MB/sec
Texel Rate 133888 Mtexels/sec 118400 Mtexels/sec
Pixel Rate 33472 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 1536 2048
Texture Mapping Units 128 128
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 max amount of data (counted in megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's 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 are applied per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Comments

5 Responses to “Geforce GTX 770 vs Radeon HD 7970”
Blub says:

which card is better a msi r7970 lightning or evga 770 titan cooled ?
becouse i have a r7970 lightning.. :S

Scott says:

Depends, For video editing yes for most games, No. AMD Cards are better for Video editing and better at some games but Nividia is better for gaming, especially on the really popular games, BF3,Far Cry 3 ect... Those cards are pretty close though. The Asus 7970 ROG Matrix is better than the Lightning because of it's better cooling and heat dissipation. The 7970 ROG Matrix is also clocked to 316 GB/s and is much quieter and cooler than reference and lightning 7970's.

Hus says:

Add GHZ edition please

Lachlan says:

Add GHZ edition please

Bedendo says:

The Core Speed and Pixel Rate is wrong about 7970, fix this!

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