GeForce GT 320 vs Radeon HD 6450 (OEM)

Intro

Compare that to the Radeon HD 6450 (OEM), which comes with GPU clock speed of 625 MHz, and 512 MB of GDDR3 memory set to run at 800 MHz through a 64-bit bus. It also is made up of 160 SPUs, 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 GT 320		43 Watts
	Difference: 12 Watts (39%)

Memory Bandwidth

As far as performance goes, the GeForce GT 320 should in theory be a lot better than the Radeon HD 6450 (OEM) overall. (explain)

GeForce GT 320		25280 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 12480 (98%)

Texel Rate

The GeForce GT 320 is quite a bit (approximately 159%) more effective at anisotropic filtering than the Radeon HD 6450 (OEM). (explain)

GeForce GT 320		12960 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 7960 (159%)

Pixel Rate

The GeForce GT 320 is much (about 73%) more effective at AA than the Radeon HD 6450 (OEM), and also able to handle higher screen resolutions while still performing well. (explain)

GeForce GT 320		4320 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 1820 (73%)

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 maximum amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen 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 speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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