GeForce 9800 GT 1GB vs GeForce GTS 450

Intro

Compare all that to the GeForce GTS 450, which makes use of a 40 nm design. nVidia has clocked the core frequency at 783 MHz. The GDDR5 RAM works at a speed of 902 MHz on this particular model. It features 192 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 1GB		105 Watts
GeForce GTS 450		106 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

As far as performance goes, the GeForce GTS 450 should theoretically be just a bit superior to the GeForce 9800 GT 1GB overall. (explain)

GeForce GTS 450		57728 MB/sec
GeForce 9800 GT 1GB		57600 MB/sec
	Difference: 128 (0%)

Texel Rate

The GeForce 9800 GT 1GB will be a lot (approximately 34%) more effective at anisotropic filtering than the GeForce GTS 450. (explain)

GeForce 9800 GT 1GB		33600 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 8544 (34%)

Pixel Rate

The GeForce GTS 450 is much (more or less 31%) more effective at anti-aliasing than the GeForce 9800 GT 1GB, and also will be able to handle higher resolutions while still performing well. (explain)

GeForce GTS 450		12528 Mpixels/sec
GeForce 9800 GT 1GB		9600 Mpixels/sec
	Difference: 2928 (31%)

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 maximum 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 card's interface width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen 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 clock 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends 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 maximum fill rate.