GeForce GT 450 (OEM) vs GeForce GTS 150

Intro

Compare all that to the GeForce GTS 150, which comes with a core clock frequency of 740 MHz and a GDDR3 memory speed of 500 MHz. It also makes use of a 256-bit memory bus, and uses a 55 nm design. It features 128 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce GTS 150		141 Watts
	Difference: 35 Watts (33%)

Memory Bandwidth

Theoretically, the GeForce GT 450 (OEM) should be a lot faster than the GeForce GTS 150 overall. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 64000 (200%)

Texel Rate

The GeForce GTS 150 is much (about 150%) more effective at anisotropic filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTS 150		47360 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 28400 (150%)

Pixel Rate

The GeForce GT 450 (OEM) should be quite a bit (approximately 60%) more effective at anti-aliasing than the GeForce GTS 150, and also should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 7120 (60%)

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: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out 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 filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.