GeForce GTX 465 vs GeForce GTX 880M

Intro

Compare those specs to the GeForce GTX 880M, which comes with a core clock frequency of 954 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is comprised of 1536 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
GeForce GTX 465		200 Watts
	Difference: 70 Watts (54%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 880M will be 25% faster than the GeForce GTX 465 in general, because of its greater bandwidth. (explain)

GeForce GTX 880M		128000 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 25408 (25%)

Texel Rate

The GeForce GTX 880M is much (more or less 357%) more effective at anisotropic filtering than the GeForce GTX 465. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 95404 (357%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 880M is the winner, by a large margin. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 11104 (57%)

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 (in units of megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, 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 maximum number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount 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 is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.