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GeForce GTX 470 vs Radeon HD 4870 2GB

Intro

The GeForce GTX 470 comes with core clock speeds of 607 MHz on the GPU, and 837 MHz on the 1280 MB of GDDR5 memory. It features 448 SPUs along with 56 Texture Address Units and 40 Rasterization Operator Units.

Compare those specs to the Radeon HD 4870 2GB, which comes with GPU clock speed of 750 MHz, and 2048 MB of GDDR5 RAM set to run at 900 MHz through a 256-bit bus. It also is made up of 800(160x5) Stream Processors, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 2GB 150 Watts
GeForce GTX 470 215 Watts
Difference: 65 Watts (43%)

Memory Bandwidth

In theory, the GeForce GTX 470 is 16% quicker than the Radeon HD 4870 2GB in general, because of its greater data rate. (explain)

GeForce GTX 470 133920 MB/sec
Radeon HD 4870 2GB 115200 MB/sec
Difference: 18720 (16%)

Texel Rate

The GeForce GTX 470 will be a small bit (approximately 13%) faster with regards to AF than the Radeon HD 4870 2GB. (explain)

GeForce GTX 470 33992 Mtexels/sec
Radeon HD 4870 2GB 30000 Mtexels/sec
Difference: 3992 (13%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 470 is a better choice, by far. (explain)

GeForce GTX 470 24280 Mpixels/sec
Radeon HD 4870 2GB 12000 Mpixels/sec
Difference: 12280 (102%)

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 4870 2GB

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 2GB
Manufacturer nVidia AMD
Year March 2010 Jun 25, 2008
Code Name GF100 RV770 XT
Memory 1280 MB 2048 MB
Core Speed 607 MHz 750 MHz
Memory Speed 3348 MHz 3600 MHz
Power (Max TDP) 215 watts 150 watts
Bandwidth 133920 MB/sec 115200 MB/sec
Texel Rate 33992 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 448 800(160x5)
Texture Mapping Units 56 40
Render Output Units 40 16
Bus Type GDDR5 GDDR5
Bus Width 320-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 3000 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

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

Display Prices

Hide Prices

GeForce GTX 470

Amazon.com

Check prices at:

Radeon HD 4870 2GB

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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