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Geforce GTX 670 vs Radeon HD 5770

Intro

The Geforce GTX 670 makes use of a 28 nm design. nVidia has set the core frequency at 915 MHz. The GDDR5 memory runs at a speed of 1500 MHz on this specific card. It features 1344 SPUs as well as 112 TAUs and 32 ROPs.

Compare that to the Radeon HD 5770, which comes with a core clock speed of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also makes use of a 128-bit bus, and makes use of a 40 nm design. It features 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770 108 Watts
Geforce GTX 670 170 Watts
Difference: 62 Watts (57%)

Memory Bandwidth

The Geforce GTX 670 should theoretically perform a lot faster than the Radeon HD 5770 in general. (explain)

Geforce GTX 670 192000 MB/sec
Radeon HD 5770 76800 MB/sec
Difference: 115200 (150%)

Texel Rate

The Geforce GTX 670 will be much (more or less 201%) faster with regards to AF than the Radeon HD 5770. (explain)

Geforce GTX 670 102480 Mtexels/sec
Radeon HD 5770 34000 Mtexels/sec
Difference: 68480 (201%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 670 is a better choice, by far. (explain)

Geforce GTX 670 29280 Mpixels/sec
Radeon HD 5770 13600 Mpixels/sec
Difference: 15680 (115%)

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 670

Amazon.com

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Radeon HD 5770

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 670 Radeon HD 5770
Manufacturer nVidia AMD
Year May 2012 October 13, 2009
Code Name GK104 Juniper XT
Memory 2048 MB 1024 MB
Core Speed 915 MHz 850 MHz
Memory Speed 6000 MHz 4800 MHz
Power (Max TDP) 170 watts 108 watts
Bandwidth 192000 MB/sec 76800 MB/sec
Texel Rate 102480 Mtexels/sec 34000 Mtexels/sec
Pixel Rate 29280 Mpixels/sec 13600 Mpixels/sec
Unified Shaders 1344 800(160x5)
Texture Mapping Units 112 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 28 nm 40 nm
Transistors 3540 million 1040 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.2 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it should 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 number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to 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 ability to get to the max fill rate.

Display Prices

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Geforce GTX 670

Amazon.com

Check prices at:

Radeon HD 5770

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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