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GeForce GT 320 vs Radeon HD 6750 1GB

Intro

The GeForce GT 320 comes with clock speeds of 540 MHz on the GPU, and 790 MHz on the 1024 MB of GDDR3 memory. It features 72 SPUs along with 24 TAUs and 8 Rasterization Operator Units.

Compare those specs to the Radeon HD 6750 1GB, which comes with a core clock speed of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 128-bit bus, and makes use of a 40 nm design. It is comprised of 720 SPUs, 36 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320 43 Watts
Radeon HD 6750 1GB 86 Watts
Difference: 43 Watts (100%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6750 1GB should be 153% faster than the GeForce GT 320 in general, due to its higher bandwidth. (explain)

Radeon HD 6750 1GB 64000 MB/sec
GeForce GT 320 25280 MB/sec
Difference: 38720 (153%)

Texel Rate

The Radeon HD 6750 1GB will be quite a bit (approximately 101%) better at AF than the GeForce GT 320. (explain)

Radeon HD 6750 1GB 26100 Mtexels/sec
GeForce GT 320 12960 Mtexels/sec
Difference: 13140 (101%)

Pixel Rate

The Radeon HD 6750 1GB is much (about 169%) more effective at AA than the GeForce GT 320, and also will be capable of handling higher resolutions more effectively. (explain)

Radeon HD 6750 1GB 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 1GB

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 1GB
Manufacturer nVidia AMD
Year February 2010 January 2011
Code Name GT215 Juniper Pro
Memory 1024 MB 1024 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 4.1

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the 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 6750 1GB

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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