GeForce 9800 GTX+ vs GeForce GTS 450 1GB

Intro

Compare all that to the GeForce GTS 450 1GB, which has core clock speeds of 783 MHz on the GPU, and 902 MHz on the 1024 MB of GDDR5 RAM. It features 192 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB		106 Watts
GeForce 9800 GTX+		145 Watts
	Difference: 39 Watts (37%)

Memory Bandwidth

As far as performance goes, the GeForce 9800 GTX+ should theoretically be quite a bit better than the GeForce GTS 450 1GB overall. (explain)

GeForce 9800 GTX+		70400 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 12672 (22%)

Texel Rate

The GeForce 9800 GTX+ is much (approximately 89%) better at anisotropic filtering than the GeForce GTS 450 1GB. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 22176 (89%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTS 450 1GB is superior to the GeForce 9800 GTX+, though only just barely. (explain)

GeForce GTS 450 1GB		12528 Mpixels/sec
GeForce 9800 GTX+		11808 Mpixels/sec
	Difference: 720 (6%)

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 data (in units of megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core 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 also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.