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GeForce GTS 450 1GB vs Radeon HD 3850 1GB

Intro

The GeForce GTS 450 1GB has a GPU core speed of 783 MHz, and the 1024 MB of GDDR5 memory runs at 902 MHz through a 128-bit bus. It also is comprised of 192 SPUs, 32 TAUs, and 16 Raster Operation Units.

Compare those specifications to the Radeon HD 3850 1GB, which has core clock speeds of 668 MHz on the GPU, and 828 MHz on the 1024 MB of GDDR3 memory. It features 320(64x5) SPUs along with 16 Texture Address Units and 16 ROPs.

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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

Theoretically speaking, the GeForce GTS 450 1GB should perform a small bit faster than the Radeon HD 3850 1GB in general. (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 much (more or less 134%) better at texture 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

The GeForce GTS 450 1GB should be a small bit (more or less 17%) faster with regards to full screen anti-aliasing than the Radeon HD 3850 1GB, and also should be capable of handling higher resolutions while still performing well. (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: Bandwidth is the largest amount of data (counted in MB per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 can be applied in one second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. 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 also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max 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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