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GeForce GT 220 GDDR3 vs Radeon HD 3470 512MB

Intro

The GeForce GT 220 GDDR3 features a GPU core speed of 625 MHz, and the 512 MB of GDDR3 memory runs at 1012 MHz through a 128-bit bus. It also is made up of 48 SPUs, 16 Texture Address Units, and 8 ROPs.

Compare all that to the Radeon HD 3470 512MB, which features core clock speeds of 800 MHz on the GPU, and 950 MHz on the 512 MB of GDDR3 RAM. It features 40(8x5) SPUs as well as 4 TAUs and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GT 220 GDDR3 will be 7% faster than the Radeon HD 3470 512MB in general, due to its higher bandwidth. (explain)

GeForce GT 220 GDDR3 32384 MB/sec
Radeon HD 3470 512MB 30400 MB/sec
Difference: 1984 (7%)

Texel Rate

The GeForce GT 220 GDDR3 is quite a bit (approximately 213%) more effective at AF than the Radeon HD 3470 512MB. (explain)

GeForce GT 220 GDDR3 10000 Mtexels/sec
Radeon HD 3470 512MB 3200 Mtexels/sec
Difference: 6800 (213%)

Pixel Rate

The GeForce GT 220 GDDR3 is a lot (approximately 56%) more effective at AA than the Radeon HD 3470 512MB, and also should be capable of handling higher resolutions more effectively. (explain)

GeForce GT 220 GDDR3 5000 Mpixels/sec
Radeon HD 3470 512MB 3200 Mpixels/sec
Difference: 1800 (56%)

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 GT 220 GDDR3

Amazon.com

Check prices at:

Radeon HD 3470 512MB

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 GT 220 GDDR3 Radeon HD 3470 512MB
Manufacturer nVidia AMD
Year October 2009 2008
Code Name GT216 RV620 PRO
Memory 512 MB 512 MB
Core Speed 625 MHz 800 MHz
Memory Speed 2024 MHz 1900 MHz
Power (Max TDP) 58 watts (Unknown) watts
Bandwidth 32384 MB/sec 30400 MB/sec
Texel Rate 10000 Mtexels/sec 3200 Mtexels/sec
Pixel Rate 5000 Mpixels/sec 3200 Mpixels/sec
Unified Shaders 48 40(8x5)
Texture Mapping Units 16 4
Render Output Units 8 4
Bus Type GDDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 40 nm 55 nm
Transistors 486 million (Unknown) million
Bus PCIe 2.0 PCIe 2.0 x16
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.2 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 number of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GT 220 GDDR3

Amazon.com

Check prices at:

Radeon HD 3470 512MB

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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