GeForce GT 450 (OEM) vs Radeon R7 250X

Intro

Compare those specs to the Radeon R7 250X, which has GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM set to run at 1125 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 11 Watts (12%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 450 (OEM) should be 33% quicker than the Radeon R7 250X overall, due to its higher bandwidth. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 24000 (33%)

Texel Rate

The Radeon R7 250X will be quite a bit (approximately 111%) faster with regards to AF than the GeForce GT 450 (OEM). (explain)

Radeon R7 250X		40000 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 21040 (111%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GT 450 (OEM) is the winner, though not by far. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 2960 (19%)

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 (counted in megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.