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GeForce GT 220 GDDR3 vs Radeon HD 3470 256MB

Intro

The GeForce GT 220 GDDR3 has a clock speed of 625 MHz and a GDDR3 memory speed of 1012 MHz. It also uses a 128-bit bus, and makes use of a 40 nm design. It is comprised of 48 SPUs, 16 Texture Address Units, and 8 ROPs.

Compare those specifications to the Radeon HD 3470 256MB, which comes with GPU clock speed of 800 MHz, and 256 MB of DDR2 RAM set to run at 950 MHz through a 128-bit bus. It also features 40(8x5) SPUs, 4 Texture Address Units, and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce GT 220 GDDR3 should be a bit faster than the Radeon HD 3470 256MB in general. (explain)

GeForce GT 220 GDDR3 32384 MB/sec
Radeon HD 3470 256MB 30400 MB/sec
Difference: 1984 (7%)

Texel Rate

The GeForce GT 220 GDDR3 will be a lot (about 213%) more effective at texture filtering than the Radeon HD 3470 256MB. (explain)

GeForce GT 220 GDDR3 10000 Mtexels/sec
Radeon HD 3470 256MB 3200 Mtexels/sec
Difference: 6800 (213%)

Pixel Rate

The GeForce GT 220 GDDR3 will be a lot (about 56%) more effective at AA than the Radeon HD 3470 256MB, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GT 220 GDDR3 5000 Mpixels/sec
Radeon HD 3470 256MB 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 256MB

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 256MB
Manufacturer nVidia AMD
Year October 2009 2008
Code Name GT216 RV620 PRO
Memory 512 MB 256 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 DDR2
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 maximum amount of information (counted in megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. 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 fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - 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 256MB

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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