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GeForce GTX 470 vs Radeon HD 7870 XT

Intro

The GeForce GTX 470 makes use of a 40 nm design. nVidia has set the core speed at 607 MHz. The GDDR5 memory runs at a speed of 837 MHz on this specific card. It features 448 SPUs along with 56 Texture Address Units and 40 Rasterization Operator Units.

Compare that to the Radeon HD 7870 XT, which makes use of a 28 nm design. AMD has clocked the core speed at 925 MHz. The GDDR5 memory is set to run at a speed of 1500 MHz on this specific card. It features 1536 SPUs along with 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

Radeon HD 7870 XT 6390 points
GeForce GTX 470 2937 points
Difference: 3453 (118%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 XT 185 Watts
GeForce GTX 470 215 Watts
Difference: 30 Watts (16%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7870 XT is 43% faster than the GeForce GTX 470 in general, due to its greater data rate. (explain)

Radeon HD 7870 XT 192000 MB/sec
GeForce GTX 470 133920 MB/sec
Difference: 58080 (43%)

Texel Rate

The Radeon HD 7870 XT is much (about 161%) faster with regards to AF than the GeForce GTX 470. (explain)

Radeon HD 7870 XT 88800 Mtexels/sec
GeForce GTX 470 33992 Mtexels/sec
Difference: 54808 (161%)

Pixel Rate

The Radeon HD 7870 XT is quite a bit (approximately 22%) more effective at full screen anti-aliasing than the GeForce GTX 470, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 7870 XT 29600 Mpixels/sec
GeForce GTX 470 24280 Mpixels/sec
Difference: 5320 (22%)

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 470

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 470 Radeon HD 7870 XT
Manufacturer nVidia AMD
Year March 2010 November 2012
Code Name GF100 Tahiti LE
Memory 1280 MB 2048 MB
Core Speed 607 MHz 925 MHz
Memory Speed 3348 MHz 6000 MHz
Power (Max TDP) 215 watts 185 watts
Bandwidth 133920 MB/sec 192000 MB/sec
Texel Rate 33992 Mtexels/sec 88800 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 448 1536
Texture Mapping Units 56 96
Render Output Units 40 32
Bus Type GDDR5 GDDR5
Bus Width 320-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 3000 million 4313 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core 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 also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GTX 470

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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