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GeForce GT 320 vs Radeon HD 6750

Intro

The GeForce GT 320 has a GPU core speed of 540 MHz, and the 1024 MB of GDDR3 memory runs at 790 MHz through a 128-bit bus. It also is made up of 72 Stream Processors, 24 Texture Address Units, and 8 Raster Operation Units.

Compare that to the Radeon HD 6750, which comes with a clock speed of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It features 720 SPUs, 36 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320 43 Watts
Radeon HD 6750 86 Watts
Difference: 43 Watts (100%)

Memory Bandwidth

Performance-wise, the Radeon HD 6750 should in theory be a lot superior to the GeForce GT 320 overall. (explain)

Radeon HD 6750 64000 MB/sec
GeForce GT 320 25280 MB/sec
Difference: 38720 (153%)

Texel Rate

The Radeon HD 6750 is a lot (about 101%) more effective at anisotropic filtering than the GeForce GT 320. (explain)

Radeon HD 6750 26100 Mtexels/sec
GeForce GT 320 12960 Mtexels/sec
Difference: 13140 (101%)

Pixel Rate

The Radeon HD 6750 will be quite a bit (about 169%) better at FSAA than the GeForce GT 320, and also will be capable of handling higher resolutions better. (explain)

Radeon HD 6750 11600 Mpixels/sec
GeForce GT 320 4320 Mpixels/sec
Difference: 7280 (169%)

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 6750

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 6750
Manufacturer nVidia AMD
Year February 2010 January 2011
Code Name GT215 Juniper Pro
Memory 1024 MB 512 MB
Core Speed 540 MHz 725 MHz
Memory Speed 1580 MHz 4000 MHz
Power (Max TDP) 43 watts 86 watts
Bandwidth 25280 MB/sec 64000 MB/sec
Texel Rate 12960 Mtexels/sec 26100 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 72 720
Texture Mapping Units 24 36
Render Output Units 8 16
Bus Type GDDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 727 million 1040 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.3 OpenGL 4.0

Memory Bandwidth: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better 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 texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number 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 Raster Operations Pipelines by the clock 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GT 320

Amazon.com

Check prices at:

Radeon HD 6750

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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