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GeForce GT 320 vs Radeon HD 6450 (OEM)

Intro

The GeForce GT 320 has a GPU core speed of 540 MHz, and the 1024 MB of GDDR3 memory is set to run at 790 MHz through a 128-bit bus. It also features 72 SPUs, 24 TAUs, and 8 Raster Operation Units.

Compare those specs to the Radeon HD 6450 (OEM), which features core clock speeds of 625 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 RAM. It features 160 SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 31 Watts
GeForce GT 320 43 Watts
Difference: 12 Watts (39%)

Memory Bandwidth

Performance-wise, the GeForce GT 320 should theoretically be much better than the Radeon HD 6450 (OEM) in general. (explain)

GeForce GT 320 25280 MB/sec
Radeon HD 6450 (OEM) 12800 MB/sec
Difference: 12480 (98%)

Texel Rate

The GeForce GT 320 will be a lot (more or less 159%) better at AF than the Radeon HD 6450 (OEM). (explain)

GeForce GT 320 12960 Mtexels/sec
Radeon HD 6450 (OEM) 5000 Mtexels/sec
Difference: 7960 (159%)

Pixel Rate

The GeForce GT 320 will be quite a bit (approximately 73%) faster with regards to FSAA than the Radeon HD 6450 (OEM), and will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GT 320 4320 Mpixels/sec
Radeon HD 6450 (OEM) 2500 Mpixels/sec
Difference: 1820 (73%)

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 6450 (OEM)

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 6450 (OEM)
Manufacturer nVidia AMD
Year February 2010 February 2011
Code Name GT215 Caicos
Memory 1024 MB 512 MB
Core Speed 540 MHz 625 MHz
Memory Speed 1580 MHz 1600 MHz
Power (Max TDP) 43 watts 31 watts
Bandwidth 25280 MB/sec 12800 MB/sec
Texel Rate 12960 Mtexels/sec 5000 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 2500 Mpixels/sec
Unified Shaders 72 160
Texture Mapping Units 24 8
Render Output Units 8 4
Bus Type GDDR3 GDDR3
Bus Width 128-bit 64-bit
Fab Process 40 nm 40 nm
Transistors 727 million 370 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.3 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GT 320

Amazon.com

Check prices at:

Radeon HD 6450 (OEM)

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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