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GeForce GT 320 vs Radeon HD 6450 (OEM)

Intro

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

Compare all of that to the Radeon HD 6450 (OEM), which comes with GPU clock speed of 625 MHz, and 512 MB of GDDR3 memory set to run at 800 MHz through a 64-bit bus. It also features 160 Stream Processors, 8 Texture Address Units, and 4 ROPs.

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

The GeForce GT 320 should in theory be a lot faster 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 should be a lot (more or less 159%) more effective 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

If running with a high screen resolution is important to you, then the GeForce GT 320 is the winner, by far. (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

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.

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: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the graphics 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 maximum number of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

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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