GeForce GT 340 vs Radeon HD 4670 1GB

Intro

Compare all of that to the Radeon HD 4670 1GB, which features clock speeds of 750 MHz on the GPU, and 1100 MHz on the 1024 MB of GDDR4/GDDR3/DDR3/DDR2 RAM. It features 320(64x5) SPUs as well as 32 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
Radeon HD 4670 1GB		70 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

The GeForce GT 340 should in theory be quite a bit faster than the Radeon HD 4670 1GB overall. (explain)

GeForce GT 340		54400 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 19200 (55%)

Texel Rate

The Radeon HD 4670 1GB will be much (about 36%) better at anisotropic filtering than the GeForce GT 340. (explain)

Radeon HD 4670 1GB		24000 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 6400 (36%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 4670 1GB is a better choice, by far. (explain)

Radeon HD 4670 1GB		6000 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 1600 (36%)

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 data (counted in MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics 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 maximum amount of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.