GeForce 9800 GT 1GB vs GeForce GTX 750

Intro

Compare that to the GeForce GTX 750, which comes with a core clock speed of 1020 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 512 SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
GeForce 9800 GT 1GB		105 Watts
	Difference: 50 Watts (91%)

Memory Bandwidth

In theory, the GeForce GTX 750 is 39% quicker than the GeForce 9800 GT 1GB overall, due to its higher bandwidth. (explain)

GeForce GTX 750		80000 MB/sec
GeForce 9800 GT 1GB		57600 MB/sec
	Difference: 22400 (39%)

Texel Rate

The GeForce 9800 GT 1GB should be a little bit (more or less 3%) more effective at AF than the GeForce GTX 750. (explain)

GeForce 9800 GT 1GB		33600 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 960 (3%)

Pixel Rate

The GeForce GTX 750 will be quite a bit (about 70%) faster with regards to full screen anti-aliasing than the GeForce 9800 GT 1GB, and also should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 750		16320 Mpixels/sec
GeForce 9800 GT 1GB		9600 Mpixels/sec
	Difference: 6720 (70%)

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 (measured in MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock 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 output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.