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GeForce GTX 480 vs Radeon HD 7870

Intro

The GeForce GTX 480 features a core clock frequency of 700 MHz and a GDDR5 memory frequency of 924 MHz. It also makes use of a 384-bit bus, and uses a 40 nm design. It is made up of 480 SPUs, 60 TAUs, and 48 ROPs.

Compare all of that to the Radeon HD 7870, which features core speeds of 1000 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 RAM. It features 1280 SPUs along with 80 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 6230 points
GeForce GTX 480 3650 points
Difference: 2580 (71%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 175 Watts
GeForce GTX 480 250 Watts
Difference: 75 Watts (43%)

Memory Bandwidth

The GeForce GTX 480 should theoretically perform a bit faster than the Radeon HD 7870 in general. (explain)

GeForce GTX 480 177408 MB/sec
Radeon HD 7870 153600 MB/sec
Difference: 23808 (16%)

Texel Rate

The Radeon HD 7870 should be a lot (more or less 90%) more effective at texture filtering than the GeForce GTX 480. (explain)

Radeon HD 7870 80000 Mtexels/sec
GeForce GTX 480 42000 Mtexels/sec
Difference: 38000 (90%)

Pixel Rate

The GeForce GTX 480 should be a bit (approximately 5%) better at FSAA than the Radeon HD 7870, and also should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 480 33600 Mpixels/sec
Radeon HD 7870 32000 Mpixels/sec
Difference: 1600 (5%)

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

Radeon HD 7870

Amazon.com

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
Manufacturer nVidia AMD
Year March 2010 March 2012
Code Name GF100 Pitcairn XT
Memory 1536 MB 2048 MB
Core Speed 700 MHz 1000 MHz
Memory Speed 3696 MHz 4800 MHz
Power (Max TDP) 250 watts 175 watts
Bandwidth 177408 MB/sec 153600 MB/sec
Texel Rate 42000 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 33600 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 480 1280
Texture Mapping Units 60 80
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 3000 million 2800 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics 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 maximum number of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate 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 rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GTX 480

Amazon.com

Radeon HD 7870

Amazon.com

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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