GeForce GT 340 vs Radeon R9 380X

Intro

Compare that to the Radeon R9 380X, which features a clock frequency of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It features 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
Radeon R9 380X		190 Watts
	Difference: 121 Watts (175%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380X will be 235% quicker than the GeForce GT 340 overall, because of its higher data rate. (explain)

Radeon R9 380X		182400 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 128000 (235%)

Texel Rate

The Radeon R9 380X should be quite a bit (about 605%) faster with regards to anisotropic filtering than the GeForce GT 340. (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 106560 (605%)

Pixel Rate

The Radeon R9 380X is a lot (approximately 605%) more effective at anti-aliasing than the GeForce GT 340, and should be capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 380X		31040 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 26640 (605%)

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 information (measured in MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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