GeForce GTX 275 vs Radeon HD 6450 (OEM)

Intro

Compare those specs to the Radeon HD 6450 (OEM), which comes with core speeds of 625 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. 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)		31 Watts
GeForce GTX 275		219 Watts
	Difference: 188 Watts (606%)

Memory Bandwidth

Theoretically, the GeForce GTX 275 should perform quite a bit faster than the Radeon HD 6450 (OEM) overall. (explain)

GeForce GTX 275		127008 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 114208 (892%)

Texel Rate

The GeForce GTX 275 will be a lot (approximately 913%) better at anisotropic filtering than the Radeon HD 6450 (OEM). (explain)

GeForce GTX 275		50640 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 45640 (913%)

Pixel Rate

The GeForce GTX 275 is quite a bit (more or less 609%) more effective at AA than the Radeon HD 6450 (OEM), and also will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 275		17724 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 15224 (609%)

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 largest amount of information (measured in megabytes per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.