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Geforce GTX 670 vs Radeon HD 7870 XT

Intro

The Geforce GTX 670 comes with a clock speed of 915 MHz and a GDDR5 memory speed of 1500 MHz. It also features a 256-bit bus, and uses a 28 nm design. It features 1344 SPUs, 112 Texture Address Units, and 32 ROPs.

Compare those specs to the Radeon HD 7870 XT, which uses a 28 nm design. AMD has set the core frequency at 925 MHz. The GDDR5 memory is set to run at a frequency of 1500 MHz on this model. It features 1536 SPUs as well as 96 TAUs 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 670 7351 points
Radeon HD 7870 XT 6390 points
Difference: 961 (15%)

Ethereum Mining Hash Rate

Radeon HD 7870 XT 15 Mh/s
Geforce GTX 670 13 Mh/s
Difference: 2 (15%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 670 170 Watts
Radeon HD 7870 XT 185 Watts
Difference: 15 Watts (9%)

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so theoretically they should perform the same. (explain)

Texel Rate

The Geforce GTX 670 is a small bit (about 15%) better at anisotropic filtering than the Radeon HD 7870 XT. (explain)

Geforce GTX 670 102480 Mtexels/sec
Radeon HD 7870 XT 88800 Mtexels/sec
Difference: 13680 (15%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7870 XT is a better choice, but only just. (explain)

Radeon HD 7870 XT 29600 Mpixels/sec
Geforce GTX 670 29280 Mpixels/sec
Difference: 320 (1%)

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 7870 XT

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 7870 XT
Manufacturer nVidia AMD
Year May 2012 November 2012
Code Name GK104 Tahiti LE
Memory 2048 MB 2048 MB
Core Speed 915 MHz 925 MHz
Memory Speed 6000 MHz 6000 MHz
Power (Max TDP) 170 watts 185 watts
Bandwidth 192000 MB/sec 192000 MB/sec
Texel Rate 102480 Mtexels/sec 88800 Mtexels/sec
Pixel Rate 29280 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 1344 1536
Texture Mapping Units 112 96
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-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 4.2 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the bus 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 better the bandwidth is, 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 processed in one second. This is worked out by multiplying the total amount of texture units by the core 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 most pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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Geforce GTX 670

Amazon.com

Check prices at:

Radeon HD 7870 XT

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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