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GeForce GTX 970 vs Radeon HD 7870 XT

Intro

The GeForce GTX 970 uses a 28 nm design. nVidia has clocked the core speed at 1050 MHz. The GDDR5 memory runs at a frequency of 1750 MHz on this particular model. It features 1664 SPUs as well as 104 Texture Address Units and 64 ROPs.

Compare those specs to the Radeon HD 7870 XT, which features GPU core speed of 925 MHz, and 2048 MB of GDDR5 RAM running at 1500 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 96 Texture Address Units, 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 970 10867 points
Radeon HD 7870 XT 6390 points
Difference: 4477 (70%)

Ethereum Mining Hash Rate

GeForce GTX 970 19 Mh/s
Radeon HD 7870 XT 15 Mh/s
Difference: 4 (27%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970 145 Watts
Radeon HD 7870 XT 185 Watts
Difference: 40 Watts (28%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 970 is 17% quicker than the Radeon HD 7870 XT in general, because of its greater data rate. (explain)

GeForce GTX 970 224000 MB/sec
Radeon HD 7870 XT 192000 MB/sec
Difference: 32000 (17%)

Texel Rate

The GeForce GTX 970 will be much (about 23%) more effective at texture filtering than the Radeon HD 7870 XT. (explain)

GeForce GTX 970 109200 Mtexels/sec
Radeon HD 7870 XT 88800 Mtexels/sec
Difference: 20400 (23%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 970 is a better choice, by far. (explain)

GeForce GTX 970 67200 Mpixels/sec
Radeon HD 7870 XT 29600 Mpixels/sec
Difference: 37600 (127%)

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 970

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 970 Radeon HD 7870 XT
Manufacturer nVidia AMD
Year September 2014 November 2012
Code Name GM204-200 Tahiti LE
Memory 4096 MB 2048 MB
Core Speed 1050 MHz 925 MHz
Memory Speed 7000 MHz 6000 MHz
Power (Max TDP) 145 watts 185 watts
Bandwidth 224000 MB/sec 192000 MB/sec
Texel Rate 109200 Mtexels/sec 88800 Mtexels/sec
Pixel Rate 67200 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 1664 1536
Texture Mapping Units 104 96
Render Output Units 64 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 5200 million 4313 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 11.1
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. 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 fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 970

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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