GeForce GT 430 (OEM) vs Radeon R7 250

Intro

Compare all of that to the Radeon R7 250, which uses a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 memory runs at a speed of 1150 MHz on this particular model. It features 384 SPUs along with 24 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 (OEM)		60 Watts
Radeon R7 250		65 Watts
	Difference: 5 Watts (8%)

Memory Bandwidth

In theory, the Radeon R7 250 should be much faster than the GeForce GT 430 (OEM) in general. (explain)

Radeon R7 250		73600 MB/sec
GeForce GT 430 (OEM)		28800 MB/sec
	Difference: 44800 (156%)

Texel Rate

The Radeon R7 250 should be quite a bit (more or less 114%) more effective at texture filtering than the GeForce GT 430 (OEM). (explain)

Radeon R7 250		24000 Mtexels/sec
GeForce GT 430 (OEM)		11200 Mtexels/sec
	Difference: 12800 (114%)

Pixel Rate

The Radeon R7 250 is much (about 186%) more effective at anti-aliasing than the GeForce GT 430 (OEM), and should be capable of handling higher resolutions without losing too much performance. (explain)

Radeon R7 250		8000 Mpixels/sec
GeForce GT 430 (OEM)		2800 Mpixels/sec
	Difference: 5200 (186%)

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 largest amount of data (in units of MB per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 processed in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.