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GeForce GTX 480 vs Radeon HD 7870 XT

Intro

The GeForce GTX 480 has a clock frequency of 700 MHz and a GDDR5 memory frequency of 924 MHz. It also features a 384-bit memory bus, and uses a 40 nm design. It features 480 SPUs, 60 Texture Address Units, and 48 ROPs.

Compare all that to the Radeon HD 7870 XT, which features GPU clock speed of 925 MHz, and 2048 MB of GDDR5 memory set to run at 1500 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 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 480 3650 points
Difference: 2740 (75%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 XT 185 Watts
GeForce GTX 480 250 Watts
Difference: 65 Watts (35%)

Memory Bandwidth

Theoretically, the Radeon HD 7870 XT should be a small bit faster than the GeForce GTX 480 in general. (explain)

Radeon HD 7870 XT 192000 MB/sec
GeForce GTX 480 177408 MB/sec
Difference: 14592 (8%)

Texel Rate

The Radeon HD 7870 XT is much (more or less 111%) better at anisotropic filtering than the GeForce GTX 480. (explain)

Radeon HD 7870 XT 88800 Mtexels/sec
GeForce GTX 480 42000 Mtexels/sec
Difference: 46800 (111%)

Pixel Rate

The GeForce GTX 480 is just a bit (approximately 14%) more effective at AA than the Radeon HD 7870 XT, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 480 33600 Mpixels/sec
Radeon HD 7870 XT 29600 Mpixels/sec
Difference: 4000 (14%)

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 480

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 480 Radeon HD 7870 XT
Manufacturer nVidia AMD
Year March 2010 November 2012
Code Name GF100 Tahiti LE
Memory 1536 MB 2048 MB
Core Speed 700 MHz 925 MHz
Memory Speed 3696 MHz 6000 MHz
Power (Max TDP) 250 watts 185 watts
Bandwidth 177408 MB/sec 192000 MB/sec
Texel Rate 42000 Mtexels/sec 88800 Mtexels/sec
Pixel Rate 33600 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 480 1536
Texture Mapping Units 60 96
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-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 max amount of information (in units of megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 480

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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