GeForce GTS 250 1GB vs Geforce GTX 780

Intro

Compare all of that to the Geforce GTX 780, which uses a 28 nm design. nVidia has set the core frequency at 863 MHz. The GDDR5 RAM runs at a speed of 1502 MHz on this particular model. It features 2304 SPUs along with 192 TAUs and 48 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 250 1GB		145 Watts
Geforce GTX 780		250 Watts
	Difference: 105 Watts (72%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 780 will be 310% faster than the GeForce GTS 250 1GB overall, because of its higher data rate. (explain)

Geforce GTX 780		288384 MB/sec
GeForce GTS 250 1GB		70400 MB/sec
	Difference: 217984 (310%)

Texel Rate

The Geforce GTX 780 is much (about 251%) faster with regards to texture filtering than the GeForce GTS 250 1GB. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce GTS 250 1GB		47232 Mtexels/sec
	Difference: 118464 (251%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 780 is superior to the GeForce GTS 250 1GB, by far. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce GTS 250 1GB		11808 Mpixels/sec
	Difference: 29616 (251%)

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 information (counted in megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If 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, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.