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GeForce GTS 450 vs GeForce GTX 295

Intro

The GeForce GTS 450 uses a 40 nm design. nVidia has set the core speed at 783 MHz. The GDDR5 RAM works at a frequency of 902 MHz on this particular model. It features 192 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Compare all of that to the GeForce GTX 295, which makes use of a 55 nm design. nVidia has set the core speed at 576 MHz. The GDDR3 memory works at a frequency of 999 MHz on this particular card. It features 240 SPUs along with 80 Texture Address Units and 28 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 106 Watts
GeForce GTX 295 289 Watts
Difference: 183 Watts (173%)

Memory Bandwidth

The GeForce GTX 295 should in theory be much faster than the GeForce GTS 450 overall. (explain)

GeForce GTX 295 223776 MB/sec
GeForce GTS 450 57728 MB/sec
Difference: 166048 (288%)

Texel Rate

The GeForce GTX 295 should be a lot (approximately 268%) better at texture filtering than the GeForce GTS 450. (explain)

GeForce GTX 295 92160 Mtexels/sec
GeForce GTS 450 25056 Mtexels/sec
Difference: 67104 (268%)

Pixel Rate

The GeForce GTX 295 is quite a bit (about 157%) better at FSAA than the GeForce GTS 450, and will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 295 32256 Mpixels/sec
GeForce GTS 450 12528 Mpixels/sec
Difference: 19728 (157%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GTS 450

Amazon.com

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GeForce GTX 295

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTS 450 GeForce GTX 295
Manufacturer nVidia nVidia
Year September 2010 January 8, 2009
Code Name GF106 G200b
Memory 512 MB 896 MB (x2)
Core Speed 783 MHz 576 MHz (x2)
Memory Speed 3608 MHz 1998 MHz (x2)
Power (Max TDP) 106 watts 289 watts
Bandwidth 57728 MB/sec 223776 MB/sec
Texel Rate 25056 Mtexels/sec 92160 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 32256 Mpixels/sec
Unified Shaders 192 240 (x2)
Texture Mapping Units 32 80 (x2)
Render Output Units 16 28 (x2)
Bus Type GDDR5 GDDR3
Bus Width 128-bit 448-bit (x2)
Fab Process 40 nm 55 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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTS 450

Amazon.com

Check prices at:

GeForce GTX 295

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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