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Geforce GTX 770 vs Radeon HD 7970


Intro

The Geforce GTX 770 comes with a core clock frequency of 1046 MHz and a GDDR5 memory frequency of 1753 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It is made up of 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon HD 7970, which uses a 28 nm design. AMD has set the core speed at 925 MHz. The GDDR5 memory is set to run at a speed of 1375 MHz on this specific card. It features 2048 SPUs as well as 128 TAUs 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 Graphics Score

Radeon HD 7970 8225 points
Geforce GTX 770 7837 points
Difference: 388 (5%)

Ethereum Mining Hash Rate

Radeon HD 7970 21 Mh/s
Geforce GTX 770 14 Mh/s
Difference: 7 (50%)

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

The Radeon HD 7970 should in theory perform a little 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 is a small bit (approximately 13%) better 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

The Geforce GTX 770 should be a little bit (more or less 13%) faster with regards to AA than the Radeon HD 7970, and capable of handling higher resolutions without losing too much performance. (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

Geforce GTX 770

Radeon HD 7970

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 maximum amount of information (counted in MB per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the interface 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 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 texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. 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 rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Geforce GTX 770

Radeon HD 7970

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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