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Geforce GTX 670 vs Radeon HD 7870 XT

Intro

The Geforce GTX 670 comes with core clock speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 memory. It features 1344 SPUs along with 112 Texture Address Units and 32 ROPs.

Compare all that to the Radeon HD 7870 XT, which has a core clock frequency of 925 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 256-bit memory bus, and makes use of a 28 nm design. It is made up of 1536 SPUs, 96 TAUs, and 32 Raster Operation 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.

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 the exact same memory bandwidth, so theoretically they should have the same performance. (explain)

Texel Rate

The Geforce GTX 670 will be just a bit (approximately 15%) faster with regards to texture 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

The Radeon HD 7870 XT will be a bit (about 1%) more effective at AA than the Geforce GTX 670, and able to handle higher resolutions while still performing well. (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

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.

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 (measured in MB per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 are applied in one second. This figure is worked out by multiplying the total texture units of the card by the core clock 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 per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the 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 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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