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GeForce GT 320 vs Radeon HD 3650

Intro

The GeForce GT 320 comes with core clock speeds of 540 MHz on the GPU, and 790 MHz on the 1024 MB of GDDR3 RAM. It features 72 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units.

Compare all that to the Radeon HD 3650, which makes use of a 55 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR4 memory works at a speed of 800 MHz on this specific model. It features 120(24x5) SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

As far as performance goes, the Radeon HD 3650 should theoretically be a bit better than the GeForce GT 320 in general. (explain)

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

Texel Rate

The GeForce GT 320 should be quite a bit (about 123%) better at anisotropic filtering than the Radeon HD 3650. (explain)

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

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GT 320 is a better choice, by a large margin. (explain)

GeForce GT 320 4320 Mpixels/sec
Radeon HD 3650 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

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
Manufacturer nVidia AMD
Year February 2010 2008
Code Name GT215 RV635 PRO
Memory 1024 MB 1024 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 GDDR4
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 largest amount of data (in units of megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If 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 high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's 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 output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GT 320

Amazon.com

Check prices at:

Radeon HD 3650

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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