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GeForce GTS 250 1GB vs GeForce GTS 450

Intro

The GeForce GTS 250 1GB has a core clock speed of 738 MHz and a GDDR3 memory frequency of 1100 MHz. It also makes use of a 256-bit bus, and makes use of a 65/55 nm design. It is made up of 128 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

Compare those specifications to the GeForce GTS 450, which features a GPU core clock speed of 783 MHz, and 512 MB of GDDR5 memory set to run at 902 MHz through a 128-bit bus. It also features 192 Stream Processors, 32 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 106 Watts
GeForce GTS 250 1GB 145 Watts
Difference: 39 Watts (37%)

Memory Bandwidth

The GeForce GTS 250 1GB should in theory be quite a bit faster than the GeForce GTS 450 in general. (explain)

GeForce GTS 250 1GB 70400 MB/sec
GeForce GTS 450 57728 MB/sec
Difference: 12672 (22%)

Texel Rate

The GeForce GTS 250 1GB is a lot (more or less 89%) faster with regards to anisotropic filtering than the GeForce GTS 450. (explain)

GeForce GTS 250 1GB 47232 Mtexels/sec
GeForce GTS 450 25056 Mtexels/sec
Difference: 22176 (89%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTS 450 is superior to the GeForce GTS 250 1GB, but not by far. (explain)

GeForce GTS 450 12528 Mpixels/sec
GeForce GTS 250 1GB 11808 Mpixels/sec
Difference: 720 (6%)

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

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GeForce GTS 250 1GB

Amazon.com

Check prices at:

GeForce GTS 450

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.

Specifications

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Model GeForce GTS 250 1GB GeForce GTS 450
Manufacturer nVidia nVidia
Year March 3, 2009 September 2010
Code Name G92a/b GF106
Memory 1024 MB 512 MB
Core Speed 738 MHz 783 MHz
Memory Speed 2200 MHz 3608 MHz
Power (Max TDP) 145 watts 106 watts
Bandwidth 70400 MB/sec 57728 MB/sec
Texel Rate 47232 Mtexels/sec 25056 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 12528 Mpixels/sec
Unified Shaders 128 192
Texture Mapping Units 64 32
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65/55 nm 40 nm
Transistors 754 million 1170 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at 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 chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTS 250 1GB

Amazon.com

Check prices at:

GeForce GTS 450

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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