GeForce GT 220 GDDR3 vs Radeon HD 7950

Intro

Compare those specifications to the Radeon HD 7950, which makes use of a 28 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 RAM is set to run at a speed of 1250 MHz on this specific card. It features 1792 SPUs as well as 112 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
Radeon HD 7950		200 Watts
	Difference: 142 Watts (245%)

Memory Bandwidth

Theoretically, the Radeon HD 7950 should perform quite a bit faster than the GeForce GT 220 GDDR3 in general. (explain)

Radeon HD 7950		240000 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 207616 (641%)

Texel Rate

The Radeon HD 7950 will be a lot (more or less 796%) more effective at AF than the GeForce GT 220 GDDR3. (explain)

Radeon HD 7950		89600 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 79600 (796%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7950 is superior to the GeForce GT 220 GDDR3, by a large margin. (explain)

Radeon HD 7950		25600 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 20600 (412%)

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 data (counted in megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.