GeForce GT 340 1GB vs Radeon R7 240

Intro

Compare those specifications to the Radeon R7 240, which comes with core clock speeds of 730 MHz on the GPU, and 900 MHz on the 2048 MB of DDR3 RAM. It features 320 SPUs along with 20 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
GeForce GT 340 1GB		69 Watts
	Difference: 39 Watts (130%)

Memory Bandwidth

In theory, the GeForce GT 340 1GB will be 89% quicker than the Radeon R7 240 in general, due to its higher data rate. (explain)

GeForce GT 340 1GB		54400 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 25600 (89%)

Texel Rate

The GeForce GT 340 1GB is quite a bit (more or less 21%) better at anisotropic filtering than the Radeon R7 240. (explain)

GeForce GT 340 1GB		17600 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 3000 (21%)

Pixel Rate

The Radeon R7 240 will be a lot (about 33%) more effective at full screen anti-aliasing than the GeForce GT 340 1GB, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R7 240		5840 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 1440 (33%)

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 max amount of information (counted in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If it uses 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 amount of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total number of texture units of the card 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card 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 ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.