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GeForce GTX 470 vs Radeon HD 4850 1GB

Intro

The GeForce GTX 470 features a core clock speed of 607 MHz and a GDDR5 memory speed of 837 MHz. It also uses a 320-bit bus, and makes use of a 40 nm design. It is made up of 448 SPUs, 56 TAUs, and 40 ROPs.

Compare those specs to the Radeon HD 4850 1GB, which uses a 55 nm design. AMD has set the core speed at 625 MHz. The GDDR4 RAM runs at a frequency of 993 MHz on this specific card. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 1GB 110 Watts
GeForce GTX 470 215 Watts
Difference: 105 Watts (95%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 470 should be quite a bit faster than the Radeon HD 4850 1GB overall. (explain)

GeForce GTX 470 133920 MB/sec
Radeon HD 4850 1GB 63552 MB/sec
Difference: 70368 (111%)

Texel Rate

The GeForce GTX 470 should be much (more or less 36%) faster with regards to texture filtering than the Radeon HD 4850 1GB. (explain)

GeForce GTX 470 33992 Mtexels/sec
Radeon HD 4850 1GB 25000 Mtexels/sec
Difference: 8992 (36%)

Pixel Rate

The GeForce GTX 470 is much (more or less 143%) better at AA than the Radeon HD 4850 1GB, and also should be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 470 24280 Mpixels/sec
Radeon HD 4850 1GB 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 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 4850 1GB
Manufacturer nVidia AMD
Year March 2010 Jun 25, 2008
Code Name GF100 RV770 PRO
Memory 1280 MB 1024 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: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units of the card 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the 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 4850 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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