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GeForce GT 340 vs Radeon HD 6750 1GB

Intro

The GeForce GT 340 uses a 40 nm design. nVidia has clocked the core frequency at 550 MHz. The GDDR5 memory is set to run at a frequency of 850 MHz on this specific card. It features 96 SPUs along with 32 Texture Address Units and 8 Rasterization Operator Units.

Compare that to the Radeon HD 6750 1GB, which features a GPU core clock speed of 725 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz through a 128-bit bus. It also is comprised of 720 Stream Processors, 36 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 69 Watts
Radeon HD 6750 1GB 86 Watts
Difference: 17 Watts (25%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6750 1GB should be 18% faster than the GeForce GT 340 in general, because of its higher data rate. (explain)

Radeon HD 6750 1GB 64000 MB/sec
GeForce GT 340 54400 MB/sec
Difference: 9600 (18%)

Texel Rate

The Radeon HD 6750 1GB will be much (about 48%) better at AF than the GeForce GT 340. (explain)

Radeon HD 6750 1GB 26100 Mtexels/sec
GeForce GT 340 17600 Mtexels/sec
Difference: 8500 (48%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6750 1GB is a better choice, by a large margin. (explain)

Radeon HD 6750 1GB 11600 Mpixels/sec
GeForce GT 340 4400 Mpixels/sec
Difference: 7200 (164%)

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 340

Amazon.com

Check prices at:

Radeon HD 6750 1GB

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 340 Radeon HD 6750 1GB
Manufacturer nVidia AMD
Year February 2010 January 2011
Code Name GT215 Juniper Pro
Memory 512 MB 1024 MB
Core Speed 550 MHz 725 MHz
Memory Speed 3400 MHz 4000 MHz
Power (Max TDP) 69 watts 86 watts
Bandwidth 54400 MB/sec 64000 MB/sec
Texel Rate 17600 Mtexels/sec 26100 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 96 720
Texture Mapping Units 32 36
Render Output Units 8 16
Bus Type GDDR5 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 information (measured in MB per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it must 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 texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units 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 fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GT 340

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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