GeForce GT 340 vs Radeon HD 7750

Intro

Compare those specifications to the Radeon HD 7750, which has a core clock frequency of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is comprised of 512 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
GeForce GT 340		69 Watts
	Difference: 14 Watts (25%)

Memory Bandwidth

The Radeon HD 7750 should theoretically be much faster than the GeForce GT 340 overall. (explain)

Radeon HD 7750		72000 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 17600 (32%)

Texel Rate

The Radeon HD 7750 will be quite a bit (about 45%) better at anisotropic filtering than the GeForce GT 340. (explain)

Radeon HD 7750		25600 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 8000 (45%)

Pixel Rate

The Radeon HD 7750 should be a lot (about 191%) faster with regards to FSAA than the GeForce GT 340, and also capable of handling higher resolutions better. (explain)

Radeon HD 7750		12800 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 8400 (191%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units 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 processed per second.

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