GeForce GTX 285 2GB vs Radeon HD 6450 (OEM)

Intro

Compare those specifications to the Radeon HD 6450 (OEM), which uses a 40 nm design. AMD has set the core speed at 625 MHz. The GDDR3 RAM runs at a frequency of 800 MHz on this model. It features 160 SPUs as well as 8 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 173 Watts (558%)

Memory Bandwidth

In theory, the GeForce GTX 285 2GB should perform a lot faster than the Radeon HD 6450 (OEM) overall. (explain)

GeForce GTX 285 2GB		158976 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 146176 (1142%)

Texel Rate

The GeForce GTX 285 2GB is quite a bit (approximately 937%) more effective at texture filtering than the Radeon HD 6450 (OEM). (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 46840 (937%)

Pixel Rate

The GeForce GTX 285 2GB is a lot (approximately 729%) better at full screen anti-aliasing than the Radeon HD 6450 (OEM), and also capable of handling higher resolutions more effectively. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 18236 (729%)

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 information (counted in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 are processed per second. This figure is worked out by multiplying the total texture units of the card by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.