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GeForce GTS 150 vs Radeon HD 3650 512MB

Intro

The GeForce GTS 150 comes with a core clock speed of 740 MHz and a GDDR3 memory frequency of 500 MHz. It also makes use of a 256-bit memory bus, and makes use of a 55 nm design. It is made up of 128 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

Compare that to the Radeon HD 3650 512MB, which has GPU clock speed of 725 MHz, and 512 MB of GDDR3 memory set to run at 800 MHz through a 128-bit bus. It also is made up of 120(24x5) Stream Processors, 8 Texture Address Units, and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 512MB 78 Watts
GeForce GTS 150 141 Watts
Difference: 63 Watts (81%)

Memory Bandwidth

As far as performance goes, the GeForce GTS 150 should in theory be much better than the Radeon HD 3650 512MB in general. (explain)

GeForce GTS 150 32000 MB/sec
Radeon HD 3650 512MB 25600 MB/sec
Difference: 6400 (25%)

Texel Rate

The GeForce GTS 150 is quite a bit (about 717%) better at anisotropic filtering than the Radeon HD 3650 512MB. (explain)

GeForce GTS 150 47360 Mtexels/sec
Radeon HD 3650 512MB 5800 Mtexels/sec
Difference: 41560 (717%)

Pixel Rate

The GeForce GTS 150 is a lot (about 308%) faster with regards to full screen anti-aliasing than the Radeon HD 3650 512MB, and should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTS 150 11840 Mpixels/sec
Radeon HD 3650 512MB 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

Check prices at:

Radeon HD 3650 512MB

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 150 Radeon HD 3650 512MB
Manufacturer nVidia AMD
Year March 10, 2009 2008
Code Name G92b RV635 PRO
Memory 1024 MB 512 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 GDDR3
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 (measured in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, 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 number is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics 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 the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTS 150

Amazon.com

Check prices at:

Radeon HD 3650 512MB

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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