GeForce GT 340 vs Radeon HD 7950 3GB

Intro

Compare all of that to the Radeon HD 7950 3GB, which makes use of a 28 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 memory is set to run at a speed of 1250 MHz on this specific card. It features 1792 SPUs as well as 112 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 131 Watts (190%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7950 3GB should theoretically be much superior to the GeForce GT 340 overall. (explain)

Radeon HD 7950 3GB		240000 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 185600 (341%)

Texel Rate

The Radeon HD 7950 3GB will be quite a bit (about 409%) faster with regards to AF than the GeForce GT 340. (explain)

Radeon HD 7950 3GB		89600 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 72000 (409%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 7950 3GB is the winner, by a large margin. (explain)

Radeon HD 7950 3GB		25600 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 21200 (482%)

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 largest amount of information (measured in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the 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 higher the card's 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 are processed per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.