GeForce 930M vs GeForce GTS 450 1GB

Intro

Compare all of that to the GeForce GTS 450 1GB, which has a core clock speed of 783 MHz and a GDDR5 memory speed of 902 MHz. It also features a 128-bit memory bus, and uses a 40 nm design. It is comprised of 192 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTS 450 1GB should be 301% quicker than the GeForce 930M overall, due to its greater data rate. (explain)

GeForce GTS 450 1GB		57728 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 43328 (301%)

Texel Rate

The GeForce GTS 450 1GB should be just a bit (about 13%) more effective at texture filtering than the GeForce 930M. (explain)

GeForce GTS 450 1GB		25056 Mtexels/sec
GeForce 930M		22272 Mtexels/sec
	Difference: 2784 (13%)

Pixel Rate

The GeForce GTS 450 1GB should be a lot (approximately 69%) more effective at AA than the GeForce 930M, and also should be capable of handling higher resolutions more effectively. (explain)

GeForce GTS 450 1GB		12528 Mpixels/sec
GeForce 930M		7424 Mpixels/sec
	Difference: 5104 (69%)

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 max amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core clock 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 per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core 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 output 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 reach the maximum fill rate.