GeForce GT 220 GDDR3 vs Radeon R9 270X

Intro

Compare all that to the Radeon R9 270X, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 memory works at a frequency of 1400 MHz on this particular model. It features 1280 SPUs as well as 80 Texture Address Units 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 R9 270X		180 Watts
	Difference: 122 Watts (210%)

Memory Bandwidth

In theory, the Radeon R9 270X is 453% faster than the GeForce GT 220 GDDR3 in general, because of its greater bandwidth. (explain)

Radeon R9 270X		179200 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 146816 (453%)

Texel Rate

The Radeon R9 270X will be quite a bit (about 700%) more effective at AF than the GeForce GT 220 GDDR3. (explain)

Radeon R9 270X		80000 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 70000 (700%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 270X is the winner, by a large margin. (explain)

Radeon R9 270X		32000 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 27000 (540%)

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 maximum amount of data (in units of MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. 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 number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the 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 maximum number of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.