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GeForce GTS 450 1GB vs Radeon HD 3650

Intro

The GeForce GTS 450 1GB comes with a clock speed of 783 MHz and a GDDR5 memory speed of 902 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It features 192 SPUs, 32 TAUs, and 16 ROPs.

Compare all of that to the Radeon HD 3650, which makes use of a 55 nm design. AMD has set the core frequency at 725 MHz. The GDDR4 RAM is set to run at a speed of 800 MHz on this particular card. It features 120(24x5) SPUs along with 8 TAUs and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 78 Watts
GeForce GTS 450 1GB 106 Watts
Difference: 28 Watts (36%)

Memory Bandwidth

As far as performance goes, the GeForce GTS 450 1GB should theoretically be quite a bit better than the Radeon HD 3650 in general. (explain)

GeForce GTS 450 1GB 57728 MB/sec
Radeon HD 3650 25600 MB/sec
Difference: 32128 (126%)

Texel Rate

The GeForce GTS 450 1GB will be quite a bit (approximately 332%) better at anisotropic filtering than the Radeon HD 3650. (explain)

GeForce GTS 450 1GB 25056 Mtexels/sec
Radeon HD 3650 5800 Mtexels/sec
Difference: 19256 (332%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTS 450 1GB is superior to the Radeon HD 3650, by a large margin. (explain)

GeForce GTS 450 1GB 12528 Mpixels/sec
Radeon HD 3650 2900 Mpixels/sec
Difference: 9628 (332%)

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

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Radeon HD 3650

Amazon.com

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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 3650
Manufacturer nVidia AMD
Year September 2010 2008
Code Name GF106 RV635 PRO
Memory 1024 MB 1024 MB
Core Speed 783 MHz 725 MHz
Memory Speed 3608 MHz 1600 MHz
Power (Max TDP) 106 watts 78 watts
Bandwidth 57728 MB/sec 25600 MB/sec
Texel Rate 25056 Mtexels/sec 5800 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 2900 Mpixels/sec
Unified Shaders 192 120(24x5)
Texture Mapping Units 32 8
Render Output Units 16 4
Bus Type GDDR5 GDDR4
Bus Width 128-bit 128-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 (in units of megabytes per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Display Prices

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GeForce GTS 450 1GB

Amazon.com

Check prices at:

Radeon HD 3650

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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