GeForce 9800 GT 1GB vs GeForce GT 340

Intro

Compare all of that to the GeForce GT 340, which makes use of a 40 nm design. nVidia has set the core frequency at 550 MHz. The GDDR5 memory runs at a frequency of 850 MHz on this particular card. It features 96 SPUs as well as 32 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
GeForce 9800 GT 1GB		105 Watts
	Difference: 36 Watts (52%)

Memory Bandwidth

The GeForce 9800 GT 1GB should in theory perform a bit faster than the GeForce GT 340 in general. (explain)

GeForce 9800 GT 1GB		57600 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 3200 (6%)

Texel Rate

The GeForce 9800 GT 1GB should be much (about 91%) faster with regards to texture filtering than the GeForce GT 340. (explain)

GeForce 9800 GT 1GB		33600 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 16000 (91%)

Pixel Rate

The GeForce 9800 GT 1GB should be a lot (more or less 118%) more effective at AA than the GeForce GT 340, and also should be capable of handling higher resolutions better. (explain)

GeForce 9800 GT 1GB		9600 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 5200 (118%)

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 largest amount of information (in units of megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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