GeForce GT 450 (OEM) vs Radeon R7 250

Intro

Compare those specs to the Radeon R7 250, which comes with a core clock speed of 1000 MHz and a GDDR5 memory speed of 1150 MHz. It also uses a 128-bit memory bus, and makes use of a 28 nm design. It features 384 SPUs, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 41 Watts (63%)

Memory Bandwidth

Theoretically, the GeForce GT 450 (OEM) should perform much faster than the Radeon R7 250 in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 22400 (30%)

Texel Rate

The Radeon R7 250 will be a lot (about 27%) more effective at texture filtering than the GeForce GT 450 (OEM). (explain)

Radeon R7 250		24000 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 5040 (27%)

Pixel Rate

The GeForce GT 450 (OEM) will be a lot (approximately 137%) better at FSAA than the Radeon R7 250, and capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 10960 (137%)

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 MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour 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 fill 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 max fill rate.