GeForce 9800 GT 1GB vs Radeon R7 250

Intro

Compare those specs to the Radeon R7 250, which has a core clock speed of 1000 MHz and a GDDR5 memory frequency of 1150 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It is comprised of 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 9800 GT 1GB		105 Watts
	Difference: 40 Watts (62%)

Memory Bandwidth

In theory, the Radeon R7 250 should perform a lot faster than the GeForce 9800 GT 1GB in general. (explain)

Radeon R7 250		73600 MB/sec
GeForce 9800 GT 1GB		57600 MB/sec
	Difference: 16000 (28%)

Texel Rate

The GeForce 9800 GT 1GB will be a lot (about 40%) more effective at AF than the Radeon R7 250. (explain)

GeForce 9800 GT 1GB		33600 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 9600 (40%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 9800 GT 1GB is the winner, though only just barely. (explain)

GeForce 9800 GT 1GB		9600 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 1600 (20%)

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 megabytes per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 can be processed in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.