GeForce 9800 GTX vs Radeon R7 250X

Intro

Compare those specifications to the Radeon R7 250X, which features a clock speed of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
GeForce 9800 GTX		140 Watts
	Difference: 45 Watts (47%)

Memory Bandwidth

The Radeon R7 250X, in theory, should perform a bit faster than the GeForce 9800 GTX overall. (explain)

Radeon R7 250X		72000 MB/sec
GeForce 9800 GTX		70400 MB/sec
	Difference: 1600 (2%)

Texel Rate

The GeForce 9800 GTX is a small bit (more or less 8%) faster with regards to anisotropic filtering than the Radeon R7 250X. (explain)

GeForce 9800 GTX		43200 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 3200 (8%)

Pixel Rate

The Radeon R7 250X should be a lot (about 48%) more effective at anti-aliasing than the GeForce 9800 GTX, and also will be able to handle higher screen resolutions better. (explain)

Radeon R7 250X		16000 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 5200 (48%)

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 largest amount of data (in units of megabytes per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses 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 high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units by the core 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.