GeForce 9800 GT 512MB vs Radeon R7 250X 2GB

Intro

Compare those specs to the Radeon R7 250X 2GB, which has a GPU core clock speed of 1000 MHz, and 2048 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
GeForce 9800 GT 512MB		105 Watts
	Difference: 10 Watts (11%)

Memory Bandwidth

Theoretically, the Radeon R7 250X 2GB should perform a lot faster than the GeForce 9800 GT 512MB overall. (explain)

Radeon R7 250X 2GB		72000 MB/sec
GeForce 9800 GT 512MB		57600 MB/sec
	Difference: 14400 (25%)

Texel Rate

The Radeon R7 250X 2GB should be just a bit (approximately 19%) better at AF than the GeForce 9800 GT 512MB. (explain)

Radeon R7 250X 2GB		40000 Mtexels/sec
GeForce 9800 GT 512MB		33600 Mtexels/sec
	Difference: 6400 (19%)

Pixel Rate

The Radeon R7 250X 2GB is much (approximately 67%) faster with regards to full screen anti-aliasing than the GeForce 9800 GT 512MB, and also capable of handling higher screen resolutions better. (explain)

Radeon R7 250X 2GB		16000 Mpixels/sec
GeForce 9800 GT 512MB		9600 Mpixels/sec
	Difference: 6400 (67%)

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 moved across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.