GeForce 8800 GTX vs Radeon HD 6450 (OEM)

Intro

Compare those specifications to the Radeon HD 6450 (OEM), which makes use of a 40 nm design. AMD has set the core speed at 625 MHz. The GDDR3 RAM runs at a speed of 800 MHz on this specific model. It features 160 SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
GeForce 8800 GTX		155 Watts
	Difference: 124 Watts (400%)

Memory Bandwidth

The GeForce 8800 GTX should theoretically be a lot faster than the Radeon HD 6450 (OEM) in general. (explain)

GeForce 8800 GTX		86400 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 73600 (575%)

Texel Rate

The GeForce 8800 GTX should be quite a bit (about 636%) better at anisotropic filtering than the Radeon HD 6450 (OEM). (explain)

GeForce 8800 GTX		36800 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 31800 (636%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce 8800 GTX is the winner, by far. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 11300 (452%)

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: Bandwidth is the max amount of information (in units of MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video 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 the video card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.