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GeForce GTS 450 vs GeForce GTX 260


Intro

The GeForce GTS 450 has clock speeds of 783 MHz on the GPU, and 902 MHz on the 512 MB of GDDR5 RAM. It features 192 SPUs as well as 32 Texture Address Units and 16 ROPs.

Compare those specifications to the GeForce GTX 260, which comes with a GPU core clock speed of 576 MHz, and 896 MB of GDDR3 RAM set to run at 999 MHz through a 448-bit bus. It also is comprised of 192 Stream Processors, 64 TAUs, and 28 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 106 Watts
GeForce GTX 260 182 Watts
Difference: 76 Watts (72%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 260 should be a lot faster than the GeForce GTS 450 overall. (explain)

GeForce GTX 260 111888 MB/sec
GeForce GTS 450 57728 MB/sec
Difference: 54160 (94%)

Texel Rate

The GeForce GTX 260 should be much (about 47%) faster with regards to texture filtering than the GeForce GTS 450. (explain)

GeForce GTX 260 36864 Mtexels/sec
GeForce GTS 450 25056 Mtexels/sec
Difference: 11808 (47%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 260 is a better choice, by far. (explain)

GeForce GTX 260 16128 Mpixels/sec
GeForce GTS 450 12528 Mpixels/sec
Difference: 3600 (29%)

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

GeForce GTS 450

GeForce GTX 260

Specifications

Display Specifications

Hide Specifications

Model GeForce GTS 450 GeForce GTX 260
Manufacturer nVidia nVidia
Year September 2010 June 16, 2008
Code Name GF106 G200
Memory 512 MB 896 MB
Core Speed 783 MHz 576 MHz
Memory Speed 3608 MHz 1998 MHz
Power (Max TDP) 106 watts 182 watts
Bandwidth 57728 MB/sec 111888 MB/sec
Texel Rate 25056 Mtexels/sec 36864 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 16128 Mpixels/sec
Unified Shaders 192 192
Texture Mapping Units 32 64
Render Output Units 16 28
Bus Type GDDR5 GDDR3
Bus Width 128-bit 448-bit
Fab Process 40 nm 65 nm
Transistors 1170 million 1400 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 11 DirectX 10
OpenGL Version OpenGL 4.1 OpenGL 3.1

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

GeForce GTS 450

GeForce GTX 260

Comments

One Response to “GeForce GTS 450 vs GeForce GTX 260”
gliterman says:

An useful article, I was searching for something like this as I've got a 260 and a nice offer for a gts450
After having a look at the article, I will continue with my 260..

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