GeForce GT 220 GDDR3 vs Radeon R7 250

Intro

Compare those specifications to the Radeon R7 250, which comes with core clock speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs as well as 24 TAUs and 8 Rasterization Operator 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

Performance-wise, the Radeon R7 250 should theoretically be much superior to the GeForce GT 220 GDDR3 overall. (explain)

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

Texel Rate

The Radeon R7 250 should be much (approximately 140%) more effective at AF 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

If using a high resolution is important to you, then the Radeon R7 250 is a better choice, and very much so. (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 information (counted in megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 processed per second. This number is worked out by multiplying the total amount 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 per second.

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