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GeForce GTX 860M vs Radeon HD 7870 XT

Intro

The GeForce GTX 860M comes with core speeds of 797 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 memory. It features 1152 SPUs as well as 96 TAUs and 16 ROPs.

Compare those specifications to the Radeon HD 7870 XT, which has core clock speeds of 925 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 RAM. It features 1536 SPUs along with 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

Radeon HD 7870 XT 6390 points
GeForce GTX 860M 4340 points
Difference: 2050 (47%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M 45 Watts
Radeon HD 7870 XT 185 Watts
Difference: 140 Watts (311%)

Memory Bandwidth

Theoretically, the Radeon HD 7870 XT should be much faster than the GeForce GTX 860M overall. (explain)

Radeon HD 7870 XT 192000 MB/sec
GeForce GTX 860M 64000 MB/sec
Difference: 128000 (200%)

Texel Rate

The Radeon HD 7870 XT is a little bit (about 16%) faster with regards to AF than the GeForce GTX 860M. (explain)

Radeon HD 7870 XT 88800 Mtexels/sec
GeForce GTX 860M 76512 Mtexels/sec
Difference: 12288 (16%)

Pixel Rate

The Radeon HD 7870 XT will be a lot (more or less 132%) faster with regards to AA than the GeForce GTX 860M, and should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 7870 XT 29600 Mpixels/sec
GeForce GTX 860M 12752 Mpixels/sec
Difference: 16848 (132%)

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 860M

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 860M Radeon HD 7870 XT
Manufacturer nVidia AMD
Year March 12 2014 November 2012
Code Name GM107 Tahiti LE
Memory 4096 MB 2048 MB
Core Speed 797 MHz 925 MHz
Memory Speed 4000 MHz 6000 MHz
Power (Max TDP) 45 watts 185 watts
Bandwidth 64000 MB/sec 192000 MB/sec
Texel Rate 76512 Mtexels/sec 88800 Mtexels/sec
Pixel Rate 12752 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 1152 1536
Texture Mapping Units 96 96
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million 4313 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 11.1
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 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, High Dynamic Range and high 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 by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core 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 output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 860M

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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