GeForce 9800 GTX+ vs Radeon HD 6750

Intro

Compare those specs to the Radeon HD 6750, which has a 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 made up of 720 SPUs, 36 Texture Address Units, and 16 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
GeForce 9800 GTX+		145 Watts
	Difference: 59 Watts (69%)

Memory Bandwidth

The GeForce 9800 GTX+ should theoretically perform a bit faster than the Radeon HD 6750 overall. (explain)

GeForce 9800 GTX+		70400 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 6400 (10%)

Texel Rate

The GeForce 9800 GTX+ will be much (more or less 81%) better at anisotropic filtering than the Radeon HD 6750. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 21132 (81%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 9800 GTX+ is a better choice, but it probably won't make a huge difference. (explain)

GeForce 9800 GTX+		11808 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 208 (2%)

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 max amount of data (in units of megabytes per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units of the card 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.