GeForce GTS 450 vs GeForce GTX 260 Core 216

Intro

Compare those specs to the GeForce GTX 260 Core 216, which features a GPU core clock speed of 576 MHz, and 896 MB of GDDR3 memory set to run at 999 MHz through a 448-bit bus. It also is comprised of 216 Stream Processors, 72 TAUs, and 28 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450		106 Watts
GeForce GTX 260 Core 216		202 Watts
	Difference: 96 Watts (91%)

Memory Bandwidth

Theoretically, the GeForce GTX 260 Core 216 should perform much faster than the GeForce GTS 450 overall. (explain)

GeForce GTX 260 Core 216		111888 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 54160 (94%)

Texel Rate

The GeForce GTX 260 Core 216 should be a lot (approximately 66%) more effective at texture filtering than the GeForce GTS 450. (explain)

GeForce GTX 260 Core 216		41472 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 16416 (66%)

Pixel Rate

The GeForce GTX 260 Core 216 is a lot (approximately 29%) better at FSAA than the GeForce GTS 450, and able to handle higher resolutions while still performing well. (explain)

GeForce GTX 260 Core 216		16128 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 3600 (29%)

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 (counted in MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must 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 AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs 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 fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.