GeForce 9800 GT 1GB vs GeForce GT 340 1GB

Intro

Compare those specs to the GeForce GT 340 1GB, which comes with GPU clock speed of 550 MHz, and 1024 MB of GDDR5 memory running at 850 MHz through a 128-bit bus. It also is comprised of 96 SPUs, 32 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the GeForce 9800 GT 1GB will be 6% quicker than the GeForce GT 340 1GB overall, because of its higher data rate. (explain)

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

Texel Rate

The GeForce 9800 GT 1GB should be much (more or less 91%) better at anisotropic filtering than the GeForce GT 340 1GB. (explain)

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

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 9800 GT 1GB is superior to the GeForce GT 340 1GB, by far. (explain)

GeForce 9800 GT 1GB		9600 Mpixels/sec
GeForce GT 340 1GB		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 max amount of information (measured in MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses 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 texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.