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GeForce GT 320 vs Radeon HD 3650 512MB

Intro

The GeForce GT 320 comes with a clock speed of 540 MHz and a GDDR3 memory speed of 790 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It features 72 SPUs, 24 TAUs, and 8 ROPs.

Compare that to the Radeon HD 3650 512MB, which has a clock frequency of 725 MHz and a GDDR3 memory frequency of 800 MHz. It also uses a 128-bit bus, and makes use of a 55 nm design. It is made up of 120(24x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320 43 Watts
Radeon HD 3650 512MB 78 Watts
Difference: 35 Watts (81%)

Memory Bandwidth

Performance-wise, the Radeon HD 3650 512MB should theoretically be just a bit superior to the GeForce GT 320 overall. (explain)

Radeon HD 3650 512MB 25600 MB/sec
GeForce GT 320 25280 MB/sec
Difference: 320 (1%)

Texel Rate

The GeForce GT 320 will be a lot (about 123%) faster with regards to texture filtering than the Radeon HD 3650 512MB. (explain)

GeForce GT 320 12960 Mtexels/sec
Radeon HD 3650 512MB 5800 Mtexels/sec
Difference: 7160 (123%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GT 320 is a better choice, and very much so. (explain)

GeForce GT 320 4320 Mpixels/sec
Radeon HD 3650 512MB 2900 Mpixels/sec
Difference: 1420 (49%)

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 3650 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 3650 512MB
Manufacturer nVidia AMD
Year February 2010 2008
Code Name GT215 RV635 PRO
Memory 1024 MB 512 MB
Core Speed 540 MHz 725 MHz
Memory Speed 1580 MHz 1600 MHz
Power (Max TDP) 43 watts 78 watts
Bandwidth 25280 MB/sec 25600 MB/sec
Texel Rate 12960 Mtexels/sec 5800 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 2900 Mpixels/sec
Unified Shaders 72 120(24x5)
Texture Mapping Units 24 8
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/AGP 8x
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.3 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total number of texture units of the card by the core clock 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 the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's 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 output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GT 320

Amazon.com

Check prices at:

Radeon HD 3650 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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