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GeForce 9800 GTX+ vs GeForce GTS 450 1GB

Intro

The GeForce 9800 GTX+ features a clock speed of 738 MHz and a GDDR3 memory frequency of 1100 MHz. It also features a 256-bit bus, and uses a 55 nm design. It features 128 SPUs, 64 Texture Address Units, and 16 ROPs.

Compare those specifications to the GeForce GTS 450 1GB, which uses a 40 nm design. nVidia has set the core frequency at 783 MHz. The GDDR5 memory runs at a speed of 902 MHz on this particular card. It features 192 SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB 106 Watts
GeForce 9800 GTX+ 145 Watts
Difference: 39 Watts (37%)

Memory Bandwidth

As far as performance goes, the GeForce 9800 GTX+ should in theory be a lot better than the GeForce GTS 450 1GB overall. (explain)

GeForce 9800 GTX+ 70400 MB/sec
GeForce GTS 450 1GB 57728 MB/sec
Difference: 12672 (22%)

Texel Rate

The GeForce 9800 GTX+ is much (about 89%) faster with regards to anisotropic filtering than the GeForce GTS 450 1GB. (explain)

GeForce 9800 GTX+ 47232 Mtexels/sec
GeForce GTS 450 1GB 25056 Mtexels/sec
Difference: 22176 (89%)

Pixel Rate

The GeForce GTS 450 1GB should be a bit (approximately 6%) faster with regards to anti-aliasing than the GeForce 9800 GTX+, and will be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTS 450 1GB 12528 Mpixels/sec
GeForce 9800 GTX+ 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 9800 GTX+

Amazon.com

Check prices at:

GeForce GTS 450 1GB

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 9800 GTX+ GeForce GTS 450 1GB
Manufacturer nVidia nVidia
Year July 2008 September 2010
Code Name G92b GF106
Memory 512 MB 1024 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 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 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 9800 GTX+

Amazon.com

Check prices at:

GeForce GTS 450 1GB

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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