GeForce 8500 GT vs Radeon HD 6450 (OEM) 1GB

Intro

Compare all that to the Radeon HD 6450 (OEM) 1GB, which makes use of a 40 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR5 RAM runs at a speed of 900 MHz on this specific card. It features 160 SPUs along with 8 Texture Address Units and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB		31 Watts
GeForce 8500 GT		45 Watts
	Difference: 14 Watts (45%)

Memory Bandwidth

In theory, the Radeon HD 6450 (OEM) 1GB is 125% faster than the GeForce 8500 GT overall, because of its greater bandwidth. (explain)

Radeon HD 6450 (OEM) 1GB		28800 MB/sec
GeForce 8500 GT		12800 MB/sec
	Difference: 16000 (125%)

Texel Rate

The Radeon HD 6450 (OEM) 1GB is a lot (approximately 67%) better at texture filtering than the GeForce 8500 GT. (explain)

Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
GeForce 8500 GT		3600 Mtexels/sec
	Difference: 2400 (67%)

Pixel Rate

The Radeon HD 6450 (OEM) 1GB will be a lot (about 67%) better at full screen anti-aliasing than the GeForce 8500 GT, and also will be capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
GeForce 8500 GT		1800 Mpixels/sec
	Difference: 1200 (67%)

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 (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour 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 output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.