GeForce GT 220 GDDR3 vs Radeon R7 250

Intro

Compare all that to the Radeon R7 250, which features a clock speed of 1000 MHz and a GDDR5 memory speed of 1150 MHz. It also features a 128-bit bus, and uses a 28 nm design. It is comprised of 384 SPUs, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
Radeon R7 250		65 Watts
	Difference: 7 Watts (12%)

Memory Bandwidth

As far as performance goes, the Radeon R7 250 should theoretically be much superior to the GeForce GT 220 GDDR3 in general. (explain)

Radeon R7 250		73600 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 41216 (127%)

Texel Rate

The Radeon R7 250 is a lot (about 140%) more effective at texture filtering than the GeForce GT 220 GDDR3. (explain)

Radeon R7 250		24000 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 14000 (140%)

Pixel Rate

The Radeon R7 250 is a lot (more or less 60%) faster with regards to AA than the GeForce GT 220 GDDR3, and also capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R7 250		8000 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 3000 (60%)

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 (measured in MB per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video 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 card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.