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GeForce GTS 450 1GB vs Radeon HD 3850 1GB

Intro

The GeForce GTS 450 1GB comes with clock speeds of 783 MHz on the GPU, and 902 MHz on the 1024 MB of GDDR5 memory. It features 192 SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Compare those specifications to the Radeon HD 3850 1GB, which features core speeds of 668 MHz on the GPU, and 828 MHz on the 1024 MB of GDDR3 RAM. It features 320(64x5) SPUs as well as 16 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3850 1GB 75 Watts
GeForce GTS 450 1GB 106 Watts
Difference: 31 Watts (41%)

Memory Bandwidth

In theory, the GeForce GTS 450 1GB will be 9% quicker than the Radeon HD 3850 1GB overall, due to its higher data rate. (explain)

GeForce GTS 450 1GB 57728 MB/sec
Radeon HD 3850 1GB 52992 MB/sec
Difference: 4736 (9%)

Texel Rate

The GeForce GTS 450 1GB is a lot (about 134%) faster with regards to anisotropic filtering than the Radeon HD 3850 1GB. (explain)

GeForce GTS 450 1GB 25056 Mtexels/sec
Radeon HD 3850 1GB 10688 Mtexels/sec
Difference: 14368 (134%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTS 450 1GB is a better choice, though not by far. (explain)

GeForce GTS 450 1GB 12528 Mpixels/sec
Radeon HD 3850 1GB 10688 Mpixels/sec
Difference: 1840 (17%)

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 450 1GB

Amazon.com

Check prices at:

Radeon HD 3850 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 GTS 450 1GB Radeon HD 3850 1GB
Manufacturer nVidia AMD
Year September 2010 Nov 19, 2007
Code Name GF106 RV670 PRO
Memory 1024 MB 1024 MB
Core Speed 783 MHz 668 MHz
Memory Speed 3608 MHz 1656 MHz
Power (Max TDP) 106 watts 75 watts
Bandwidth 57728 MB/sec 52992 MB/sec
Texel Rate 25056 Mtexels/sec 10688 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 10688 Mpixels/sec
Unified Shaders 192 320(64x5)
Texture Mapping Units 32 16
Render Output Units 16 16
Bus Type GDDR5 GDDR3
Bus Width 128-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1170 million (Unknown) million
Bus PCIe x16 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total 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 one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount 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 output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTS 450 1GB

Amazon.com

Check prices at:

Radeon HD 3850 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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