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GeForce GTS 150 vs Radeon HD 3650

Intro

The GeForce GTS 150 features a clock frequency of 740 MHz and a GDDR3 memory frequency of 500 MHz. It also makes use of a 256-bit bus, and makes use of a 55 nm design. It is made up of 128 SPUs, 64 TAUs, and 16 ROPs.

Compare that to the Radeon HD 3650, which uses a 55 nm design. AMD has set the core speed at 725 MHz. The GDDR4 memory is set to run at a speed of 800 MHz on this card. It features 120(24x5) SPUs as well as 8 Texture Address Units 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 150 141 Watts
Difference: 63 Watts (81%)

Memory Bandwidth

The GeForce GTS 150 should theoretically perform quite a bit faster than the Radeon HD 3650 in general. (explain)

GeForce GTS 150 32000 MB/sec
Radeon HD 3650 25600 MB/sec
Difference: 6400 (25%)

Texel Rate

The GeForce GTS 150 should be quite a bit (approximately 717%) better at texture filtering than the Radeon HD 3650. (explain)

GeForce GTS 150 47360 Mtexels/sec
Radeon HD 3650 5800 Mtexels/sec
Difference: 41560 (717%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTS 150 is a better choice, by far. (explain)

GeForce GTS 150 11840 Mpixels/sec
Radeon HD 3650 2900 Mpixels/sec
Difference: 8940 (308%)

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 150

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 150 Radeon HD 3650
Manufacturer nVidia AMD
Year March 10, 2009 2008
Code Name G92b RV635 PRO
Memory 1024 MB 1024 MB
Core Speed 740 MHz 725 MHz
Memory Speed 1000 MHz 1600 MHz
Power (Max TDP) 141 watts 78 watts
Bandwidth 32000 MB/sec 25600 MB/sec
Texel Rate 47360 Mtexels/sec 5800 Mtexels/sec
Pixel Rate 11840 Mpixels/sec 2900 Mpixels/sec
Unified Shaders 128 120(24x5)
Texture Mapping Units 64 8
Render Output Units 16 4
Bus Type GDDR3 GDDR4
Bus Width 256-bit 128-bit
Fab Process 55 nm 55 nm
Transistors 754 million (Unknown) million
Bus PCIe x16 2.0 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range 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 calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure 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 drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GTS 150

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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