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

Intro

Compare that to the Radeon R7 250X 2GB, which features core speeds of 1000 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

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

As far as performance goes, the Radeon R7 250X 2GB should theoretically be a lot superior to the GeForce 9800 GT 512MB in general. (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 will be just a bit (approximately 19%) more effective at texture filtering 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

If running with a high resolution is important to you, then the Radeon R7 250X 2GB is the winner, and very much so. (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 maximum amount of data (measured in MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.