GeForce GT 220 GDDR3 vs Radeon R5 M255

Intro

Compare all that to the Radeon R5 M255, which makes use of a 28 nm design. AMD has clocked the core frequency at 940 MHz. The DDR3 memory runs at a speed of 1000 MHz on this specific card. It features 320 SPUs as well as 20 TAUs and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GT 220 GDDR3, in theory, should perform much faster than the Radeon R5 M255 overall. (explain)

GeForce GT 220 GDDR3		32384 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 16384 (102%)

Texel Rate

The Radeon R5 M255 should be quite a bit (about 88%) more effective at AF than the GeForce GT 220 GDDR3. (explain)

Radeon R5 M255		18800 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 8800 (88%)

Pixel Rate

The Radeon R5 M255 will be a lot (approximately 50%) more effective at anti-aliasing than the GeForce GT 220 GDDR3, and also should be able to handle higher screen resolutions while still performing well. (explain)

Radeon R5 M255		7520 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 2520 (50%)

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 in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.