GeForce 9800 GT 512MB vs GeForce 9800 GTX+

Intro

Compare those specs to the GeForce 9800 GTX+, which features GPU clock speed of 738 MHz, and 512 MB of GDDR3 memory running at 1100 MHz through a 256-bit bus. It also is comprised of 128 Stream Processors, 64 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 512MB		105 Watts
GeForce 9800 GTX+		145 Watts
	Difference: 40 Watts (38%)

Memory Bandwidth

The GeForce 9800 GTX+ should in theory perform a lot faster than the GeForce 9800 GT 512MB in general. (explain)

GeForce 9800 GTX+		70400 MB/sec
GeForce 9800 GT 512MB		57600 MB/sec
	Difference: 12800 (22%)

Texel Rate

The GeForce 9800 GTX+ is much (approximately 41%) more effective at AF than the GeForce 9800 GT 512MB. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
GeForce 9800 GT 512MB		33600 Mtexels/sec
	Difference: 13632 (41%)

Pixel Rate

The GeForce 9800 GTX+ should be much (more or less 23%) more effective at FSAA than the GeForce 9800 GT 512MB, and also will be capable of handling higher screen resolutions more effectively. (explain)

GeForce 9800 GTX+		11808 Mpixels/sec
GeForce 9800 GT 512MB		9600 Mpixels/sec
	Difference: 2208 (23%)

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 data (measured in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka 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, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.