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GeForce GTX 470 vs Radeon HD 4870 X2

Intro

The GeForce GTX 470 has a GPU core speed of 607 MHz, and the 1280 MB of GDDR5 RAM runs at 837 MHz through a 320-bit bus. It also features 448 SPUs, 56 TAUs, and 40 ROPs.

Compare all of that to the Radeon HD 4870 X2, which comes with a core clock frequency of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also uses a 256-bit bus, and makes use of a 55 nm design. It is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 470 215 Watts
Radeon HD 4870 X2 350 Watts
Difference: 135 Watts (63%)

Memory Bandwidth

In theory, the Radeon HD 4870 X2 should perform quite a bit faster than the GeForce GTX 470 overall. (explain)

Radeon HD 4870 X2 230400 MB/sec
GeForce GTX 470 133920 MB/sec
Difference: 96480 (72%)

Texel Rate

The Radeon HD 4870 X2 is much (about 77%) faster with regards to AF than the GeForce GTX 470. (explain)

Radeon HD 4870 X2 60000 Mtexels/sec
GeForce GTX 470 33992 Mtexels/sec
Difference: 26008 (77%)

Pixel Rate

The GeForce GTX 470 will be a bit (approximately 1%) faster with regards to FSAA than the Radeon HD 4870 X2, and capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 470 24280 Mpixels/sec
Radeon HD 4870 X2 24000 Mpixels/sec
Difference: 280 (1%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GTX 470

Amazon.com

Check prices at:

Radeon HD 4870 X2

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 4870 X2
Manufacturer nVidia AMD
Year March 2010 Aug 12, 2008
Code Name GF100 R700
Memory 1280 MB 1024 MB (x2)
Core Speed 607 MHz 750 MHz (x2)
Memory Speed 3348 MHz 3600 MHz (x2)
Power (Max TDP) 215 watts 350 watts
Bandwidth 133920 MB/sec 230400 MB/sec
Texel Rate 33992 Mtexels/sec 60000 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 24000 Mpixels/sec
Unified Shaders 448 800(160x5) (x2)
Texture Mapping Units 56 40 (x2)
Render Output Units 40 16 (x2)
Bus Type GDDR5 GDDR5
Bus Width 320-bit 256-bit (x2)
Fab Process 40 nm 55 nm
Transistors 3000 million 956 million
Bus PCIe x16 PCIe 2.0 x16 (PCIe bridge)
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it must 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 anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 470

Amazon.com

Check prices at:

Radeon HD 4870 X2

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.

Comments

One Response to “GeForce GTX 470 vs Radeon HD 4870 X2”
dart says:

Gracias por hacer esta comparasiĆ³n, tenia muchas dudas respecto de estas 2.
Saludos

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