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GeForce GTX 470 vs Radeon HD 4850 2GB

Intro

The GeForce GTX 470 has core clock speeds of 607 MHz on the GPU, and 837 MHz on the 1280 MB of GDDR5 memory. It features 448 SPUs as well as 56 TAUs and 40 Rasterization Operator Units.

Compare those specifications to the Radeon HD 4850 2GB, which comes with GPU core speed of 625 MHz, and 2048 MB of GDDR4 memory running at 993 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 2GB 110 Watts
GeForce GTX 470 215 Watts
Difference: 105 Watts (95%)

Memory Bandwidth

Performance-wise, the GeForce GTX 470 should in theory be much superior to the Radeon HD 4850 2GB overall. (explain)

GeForce GTX 470 133920 MB/sec
Radeon HD 4850 2GB 63552 MB/sec
Difference: 70368 (111%)

Texel Rate

The GeForce GTX 470 should be much (more or less 36%) more effective at texture filtering than the Radeon HD 4850 2GB. (explain)

GeForce GTX 470 33992 Mtexels/sec
Radeon HD 4850 2GB 25000 Mtexels/sec
Difference: 8992 (36%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 470 is superior to the Radeon HD 4850 2GB, and very much so. (explain)

GeForce GTX 470 24280 Mpixels/sec
Radeon HD 4850 2GB 10000 Mpixels/sec
Difference: 14280 (143%)

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 4850 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 4850 2GB
Manufacturer nVidia AMD
Year March 2010 Jun 25, 2008
Code Name GF100 RV770 PRO
Memory 1280 MB 2048 MB
Core Speed 607 MHz 625 MHz
Memory Speed 3348 MHz 1986 MHz
Power (Max TDP) 215 watts 110 watts
Bandwidth 133920 MB/sec 63552 MB/sec
Texel Rate 33992 Mtexels/sec 25000 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 10000 Mpixels/sec
Unified Shaders 448 800(160x5)
Texture Mapping Units 56 40
Render Output Units 40 16
Bus Type GDDR5 GDDR4
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 (measured in MB per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the 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 4850 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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