GeForce GTS 450 1GB vs GeForce GTX 860M

Intro

Compare those specs to the GeForce GTX 860M, which features a core clock speed of 797 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It features 1152 SPUs, 96 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 61 Watts (136%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 860M should in theory be a bit better than the GeForce GTS 450 1GB in general. (explain)

GeForce GTX 860M		64000 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 6272 (11%)

Texel Rate

The GeForce GTX 860M will be much (more or less 205%) faster with regards to texture filtering than the GeForce GTS 450 1GB. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 51456 (205%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 860M is the winner, but only just. (explain)

GeForce GTX 860M		12752 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 224 (2%)

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 data (counted in megabytes per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.