GeForce GT 340 1GB vs Radeon R7 250X 2GB

Intro

Compare all of that to the Radeon R7 250X 2GB, which has core clock speeds of 1000 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 memory. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
Radeon R7 250X 2GB		95 Watts
	Difference: 26 Watts (38%)

Memory Bandwidth

In theory, the Radeon R7 250X 2GB should perform a lot faster than the GeForce GT 340 1GB in general. (explain)

Radeon R7 250X 2GB		72000 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 17600 (32%)

Texel Rate

The Radeon R7 250X 2GB should be a lot (about 127%) more effective at anisotropic filtering than the GeForce GT 340 1GB. (explain)

Radeon R7 250X 2GB		40000 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 22400 (127%)

Pixel Rate

The Radeon R7 250X 2GB will be quite a bit (more or less 264%) faster with regards to anti-aliasing than the GeForce GT 340 1GB, and also should be able to handle higher screen resolutions better. (explain)

Radeon R7 250X 2GB		16000 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 11600 (264%)

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 max amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.