GeForce 830M vs GeForce GTS 250 512MB

Intro

Compare those specs to the GeForce GTS 250 512MB, which has core clock speeds of 738 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 RAM. It features 128 SPUs as well as 64 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTS 250 512MB		145 Watts
	Difference: 120 Watts (480%)

Memory Bandwidth

Theoretically speaking, the GeForce GTS 250 512MB will be 389% quicker than the GeForce 830M overall, due to its higher data rate. (explain)

GeForce GTS 250 512MB		70400 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 56000 (389%)

Texel Rate

The GeForce GTS 250 512MB is quite a bit (more or less 187%) more effective at texture filtering than the GeForce 830M. (explain)

GeForce GTS 250 512MB		47232 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 30768 (187%)

Pixel Rate

The GeForce GTS 250 512MB is a lot (about 43%) more effective at AA than the GeForce 830M, and able to handle higher resolutions better. (explain)

GeForce GTS 250 512MB		11808 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 3576 (43%)

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 (measured in megabytes per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better 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 that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. 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 rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.