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GeForce GTX 470 vs Radeon HD 7870 XT

Intro

The GeForce GTX 470 comes with a clock speed of 607 MHz and a GDDR5 memory speed of 837 MHz. It also makes use of a 320-bit bus, and uses a 40 nm design. It is made up of 448 SPUs, 56 Texture Address Units, and 40 Raster Operation Units.

Compare those specs to the Radeon HD 7870 XT, which has GPU core speed of 925 MHz, and 2048 MB of GDDR5 RAM set to run at 1500 MHz through a 256-bit bus. It also features 1536 Stream Processors, 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 should be 43% quicker than the GeForce GTX 470 in general, because of its higher 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 will be much (approximately 161%) faster with regards to texture filtering 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 (about 22%) better at AA than the GeForce GTX 470, and also capable of handling higher resolutions better. (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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per 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 - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach 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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