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GeForce GT 320 vs Radeon HD 3470 512MB

Intro

The GeForce GT 320 comes with clock speeds of 540 MHz on the GPU, and 790 MHz on the 1024 MB of GDDR3 memory. It features 72 SPUs as well as 24 TAUs and 8 ROPs.

Compare that to the Radeon HD 3470 512MB, which has GPU clock speed of 800 MHz, and 512 MB of GDDR3 RAM running at 950 MHz through a 128-bit bus. It also features 40(8x5) Stream Processors, 4 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3470 512MB should theoretically perform a bit faster than the GeForce GT 320 in general. (explain)

Radeon HD 3470 512MB 30400 MB/sec
GeForce GT 320 25280 MB/sec
Difference: 5120 (20%)

Texel Rate

The GeForce GT 320 is much (more or less 305%) more effective at anisotropic filtering than the Radeon HD 3470 512MB. (explain)

GeForce GT 320 12960 Mtexels/sec
Radeon HD 3470 512MB 3200 Mtexels/sec
Difference: 9760 (305%)

Pixel Rate

The GeForce GT 320 will be much (approximately 35%) better at FSAA than the Radeon HD 3470 512MB, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GT 320 4320 Mpixels/sec
Radeon HD 3470 512MB 3200 Mpixels/sec
Difference: 1120 (35%)

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 320

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 320 Radeon HD 3470 512MB
Manufacturer nVidia AMD
Year February 2010 2008
Code Name GT215 RV620 PRO
Memory 1024 MB 512 MB
Core Speed 540 MHz 800 MHz
Memory Speed 1580 MHz 1900 MHz
Power (Max TDP) 43 watts (Unknown) watts
Bandwidth 25280 MB/sec 30400 MB/sec
Texel Rate 12960 Mtexels/sec 3200 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 3200 Mpixels/sec
Unified Shaders 72 40(8x5)
Texture Mapping Units 24 4
Render Output Units 8 4
Bus Type GDDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 40 nm 55 nm
Transistors 727 million (Unknown) million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.3 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the 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 maximum amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's 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 lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GT 320

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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