GeForce 9500 GT 512MB GDDR3 vs Geforce GTX 780

Intro

Compare all that to the Geforce GTX 780, which uses a 28 nm design. nVidia has clocked the core speed at 863 MHz. The GDDR5 memory is set to run at a frequency of 1502 MHz on this particular model. It features 2304 SPUs as well as 192 Texture Address Units and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT 512MB GDDR3		50 Watts
Geforce GTX 780		250 Watts
	Difference: 200 Watts (400%)

Memory Bandwidth

The Geforce GTX 780, in theory, should be quite a bit faster than the GeForce 9500 GT 512MB GDDR3 overall. (explain)

Geforce GTX 780		288384 MB/sec
GeForce 9500 GT 512MB GDDR3		25600 MB/sec
	Difference: 262784 (1027%)

Texel Rate

The Geforce GTX 780 is a lot (more or less 1783%) faster with regards to AF than the GeForce 9500 GT 512MB GDDR3. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce 9500 GT 512MB GDDR3		8800 Mtexels/sec
	Difference: 156896 (1783%)

Pixel Rate

The Geforce GTX 780 should be a lot (approximately 841%) better at FSAA than the GeForce 9500 GT 512MB GDDR3, and will be able to handle higher resolutions more effectively. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce 9500 GT 512MB GDDR3		4400 Mpixels/sec
	Difference: 37024 (841%)

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 moved across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.