GeForce GT 1030 vs GeForce GTS 450 1GB

Intro

Compare those specs to the GeForce GTS 450 1GB, which features GPU clock speed of 783 MHz, and 1024 MB of GDDR5 RAM running at 902 MHz through a 128-bit bus. It also features 192 Stream Processors, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 1030		30 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 76 Watts (253%)

Memory Bandwidth

In theory, the GeForce GTS 450 1GB will be 17% quicker than the GeForce GT 1030 overall, because of its greater bandwidth. (explain)

GeForce GTS 450 1GB		57728 MB/sec
GeForce GT 1030		49152 MB/sec
	Difference: 8576 (17%)

Texel Rate

The GeForce GT 1030 will be a lot (more or less 62%) faster with regards to texture filtering than the GeForce GTS 450 1GB. (explain)

GeForce GT 1030		40480 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 15424 (62%)

Pixel Rate

The GeForce GT 1030 should be quite a bit (about 62%) more effective at FSAA than the GeForce GTS 450 1GB, and capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GT 1030		20240 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 7712 (62%)

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 information (measured in megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the 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 texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at 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 that the graphics chip can 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 colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.