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GeForce GTS 450 vs Radeon HD 3850 1GB

Intro

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

Compare those specifications to the Radeon HD 3850 1GB, which comes with a clock speed of 668 MHz and a GDDR3 memory frequency of 828 MHz. It also uses a 256-bit memory bus, and makes use of a 55 nm design. It is comprised of 320(64x5) SPUs, 16 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the GeForce GTS 450 should be 9% quicker than the Radeon HD 3850 1GB overall, because of its higher bandwidth. (explain)

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

Texel Rate

The GeForce GTS 450 will be much (approximately 134%) faster with regards to anisotropic filtering than the Radeon HD 3850 1GB. (explain)

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

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTS 450 is a better choice, but only just. (explain)

GeForce GTS 450 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

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 Radeon HD 3850 1GB
Manufacturer nVidia AMD
Year September 2010 Nov 19, 2007
Code Name GF106 RV670 PRO
Memory 512 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 megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum 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 clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTS 450

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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