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GeForce GTX 470 vs Radeon HD 4870 1GB

Intro

The GeForce GTX 470 comes with core speeds of 607 MHz on the GPU, and 837 MHz on the 1280 MB of GDDR5 memory. It features 448 SPUs along with 56 TAUs and 40 ROPs.

Compare all that to the Radeon HD 4870 1GB, which makes use of a 55 nm design. AMD has set the core speed at 750 MHz. The GDDR5 RAM runs at a frequency of 900 MHz on this model. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 1GB 150 Watts
GeForce GTX 470 215 Watts
Difference: 65 Watts (43%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 470 should in theory be a small bit superior to the Radeon HD 4870 1GB in general. (explain)

GeForce GTX 470 133920 MB/sec
Radeon HD 4870 1GB 115200 MB/sec
Difference: 18720 (16%)

Texel Rate

The GeForce GTX 470 will be a small bit (approximately 13%) better at texture filtering than the Radeon HD 4870 1GB. (explain)

GeForce GTX 470 33992 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 3992 (13%)

Pixel Rate

The GeForce GTX 470 is much (about 102%) more effective at full screen anti-aliasing than the Radeon HD 4870 1GB, and will be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 470 24280 Mpixels/sec
Radeon HD 4870 1GB 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 1GB

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 1GB
Manufacturer nVidia AMD
Year March 2010 Jun 25, 2008
Code Name GF100 RV770 XT
Memory 1280 MB 1024 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 max amount of information (measured in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines 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 output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 470

Amazon.com

Check prices at:

Radeon HD 4870 1GB

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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