GeForce GT 340 1GB vs Radeon R9 M280X

Intro

Compare those specifications to the Radeon R9 M280X, which comes with a clock speed of 900 MHz and a GDDR5 memory frequency of 1375 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is made up of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
Radeon R9 M280X		75 Watts
	Difference: 6 Watts (9%)

Memory Bandwidth

In theory, the Radeon R9 M280X will be 62% faster than the GeForce GT 340 1GB overall, because of its greater data rate. (explain)

Radeon R9 M280X		88000 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 33600 (62%)

Texel Rate

The Radeon R9 M280X will be much (approximately 186%) better at anisotropic filtering than the GeForce GT 340 1GB. (explain)

Radeon R9 M280X		50400 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 32800 (186%)

Pixel Rate

The Radeon R9 M280X is much (approximately 227%) better at full screen anti-aliasing than the GeForce GT 340 1GB, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R9 M280X		14400 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 10000 (227%)

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 maximum amount of data (counted in megabytes per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.