GeForce GTS 150 vs GeForce GTX 465

Intro

Compare those specs to the GeForce GTX 465, which makes use of a 40 nm design. nVidia has set the core speed at 607 MHz. The GDDR5 memory works at a frequency of 802 MHz on this particular card. It features 352 SPUs along with 44 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 150		141 Watts
GeForce GTX 465		200 Watts
	Difference: 59 Watts (42%)

Memory Bandwidth

In theory, the GeForce GTX 465 will be 221% quicker than the GeForce GTS 150 in general, because of its higher bandwidth. (explain)

GeForce GTX 465		102592 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 70592 (221%)

Texel Rate

The GeForce GTS 150 should be quite a bit (approximately 77%) more effective at anisotropic filtering than the GeForce GTX 465. (explain)

GeForce GTS 150		47360 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 20652 (77%)

Pixel Rate

The GeForce GTX 465 is quite a bit (about 64%) more effective at full screen anti-aliasing than the GeForce GTS 150, and also should be able to handle higher resolutions more effectively. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 7584 (64%)

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 maximum amount of data (counted in MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it should 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum 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 this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out 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 filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.