GeForce GT 240 GDDR5 1GB vs Radeon R9 290X

Intro

Compare all of that to the Radeon R9 290X, which uses a 28 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this card. It features 2816 SPUs along with 176 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB		70 Watts
Radeon R9 290X		300 Watts
	Difference: 230 Watts (329%)

Memory Bandwidth

In theory, the Radeon R9 290X should be quite a bit faster than the GeForce GT 240 GDDR5 1GB in general. (explain)

Radeon R9 290X		320000 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 265600 (488%)

Texel Rate

The Radeon R9 290X should be a lot (more or less 700%) faster with regards to texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)

Radeon R9 290X		140800 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 123200 (700%)

Pixel Rate

The Radeon R9 290X will be quite a bit (more or less 1064%) more effective at anti-aliasing than the GeForce GT 240 GDDR5 1GB, and also able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R9 290X		51200 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 46800 (1064%)

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 information (counted in megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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 also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.