GeForce GT 220 GDDR3 vs Radeon R9 390X 8G

Intro

Compare that to the Radeon R9 390X 8G, which makes use of a 28 nm design. AMD has set the core speed at 1050 MHz. The GDDR5 memory is set to run at a speed of 1500 MHz on this specific card. It features 2816 SPUs as well as 176 TAUs and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 217 Watts (374%)

Memory Bandwidth

Performance-wise, the Radeon R9 390X 8G should theoretically be quite a bit superior to the GeForce GT 220 GDDR3 overall. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 351616 (1086%)

Texel Rate

The Radeon R9 390X 8G will be quite a bit (about 1748%) faster with regards to AF than the GeForce GT 220 GDDR3. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 174800 (1748%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 390X 8G is superior to the GeForce GT 220 GDDR3, by a large margin. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 62200 (1244%)

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 max amount of data (in units of megabytes per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs 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 rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.