GeForce GTS 250 1GB vs GeForce GTX 880M

Intro

Compare those specifications to the GeForce GTX 880M, which uses a 28 nm design. nVidia has set the core speed at 954 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this model. It features 1536 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
GeForce GTS 250 1GB		145 Watts
	Difference: 15 Watts (12%)

Memory Bandwidth

The GeForce GTX 880M should in theory perform a lot faster than the GeForce GTS 250 1GB in general. (explain)

GeForce GTX 880M		128000 MB/sec
GeForce GTS 250 1GB		70400 MB/sec
	Difference: 57600 (82%)

Texel Rate

The GeForce GTX 880M should be much (about 159%) more effective at texture filtering than the GeForce GTS 250 1GB. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GTS 250 1GB		47232 Mtexels/sec
	Difference: 74880 (159%)

Pixel Rate

The GeForce GTX 880M should be much (more or less 159%) faster with regards to full screen anti-aliasing than the GeForce GTS 250 1GB, and should be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce GTS 250 1GB		11808 Mpixels/sec
	Difference: 18720 (159%)

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 transferred over the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.