GeForce 9500 GT DDR2 vs Radeon HD 6750

Intro

Compare all that to the Radeon HD 6750, which makes use of a 40 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this particular card. It features 720 SPUs as well as 36 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT DDR2		50 Watts
Radeon HD 6750		86 Watts
	Difference: 36 Watts (72%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6750 should perform quite a bit faster than the GeForce 9500 GT DDR2 in general. (explain)

Radeon HD 6750		64000 MB/sec
GeForce 9500 GT DDR2		16000 MB/sec
	Difference: 48000 (300%)

Texel Rate

The Radeon HD 6750 is quite a bit (approximately 197%) more effective at anisotropic filtering than the GeForce 9500 GT DDR2. (explain)

Radeon HD 6750		26100 Mtexels/sec
GeForce 9500 GT DDR2		8800 Mtexels/sec
	Difference: 17300 (197%)

Pixel Rate

The Radeon HD 6750 will be a lot (about 164%) better at full screen anti-aliasing than the GeForce 9500 GT DDR2, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 6750		11600 Mpixels/sec
GeForce 9500 GT DDR2		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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better 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 are processed per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics 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 most pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.