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GeForce GT 320 vs Radeon HD 3650

Intro

The GeForce GT 320 comes with a core clock frequency 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 is made up of 72 SPUs, 24 TAUs, and 8 Raster Operation Units.

Compare all of that to the Radeon HD 3650, which features core speeds of 725 MHz on the GPU, and 800 MHz on the 1024 MB of GDDR4 memory. 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 in theory be just a bit better than the GeForce GT 320 overall. (explain)

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

Texel Rate

The GeForce GT 320 should be a lot (approximately 123%) better at texture 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 high levels of AA is important to you, then the GeForce GT 320 is superior to the Radeon HD 3650, and very much so. (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

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Radeon HD 3650

Amazon.com

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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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel 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 potential 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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