GeForce GT 340 1GB vs Radeon R9 380X

Intro

Compare those specs to the Radeon R9 380X, which features a core clock speed of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
Radeon R9 380X		190 Watts
	Difference: 121 Watts (175%)

Memory Bandwidth

In theory, the Radeon R9 380X should be 235% faster than the GeForce GT 340 1GB overall, because of its greater bandwidth. (explain)

Radeon R9 380X		182400 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 128000 (235%)

Texel Rate

The Radeon R9 380X is quite a bit (about 605%) better at texture filtering than the GeForce GT 340 1GB. (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 106560 (605%)

Pixel Rate

The Radeon R9 380X will be quite a bit (about 605%) better at AA than the GeForce GT 340 1GB, and able to handle higher resolutions while still performing well. (explain)

Radeon R9 380X		31040 Mpixels/sec
GeForce GT 340 1GB		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: Bandwidth is the max amount of information (in units of MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at 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 the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.