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Radeon HD 3690/3830 vs Radeon HD 6450 (OEM) 1GB

Intro

The Radeon HD 3690/3830 uses a 55 nm design. AMD has clocked the core frequency at 668 MHz. The GDDR3 memory is set to run at a frequency of 828 MHz on this particular model. It features 320(64x5) SPUs along with 16 Texture Address Units and 16 ROPs.

Compare those specifications to the Radeon HD 6450 (OEM) 1GB, which makes use of a 40 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 RAM is set to run at a speed of 900 MHz on this particular model. It features 160 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 6450 (OEM) 1GB 31 Watts
Radeon HD 3690/3830 75 Watts
Difference: 44 Watts (142%)

Memory Bandwidth

The Radeon HD 6450 (OEM) 1GB should theoretically perform a small bit faster than the Radeon HD 3690/3830 in general. (explain)

Radeon HD 6450 (OEM) 1GB 28800 MB/sec
Radeon HD 3690/3830 26496 MB/sec
Difference: 2304 (9%)

Texel Rate

The Radeon HD 3690/3830 is much (more or less 78%) faster with regards to texture filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

Radeon HD 3690/3830 10688 Mtexels/sec
Radeon HD 6450 (OEM) 1GB 6000 Mtexels/sec
Difference: 4688 (78%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 3690/3830 is the winner, and very much so. (explain)

Radeon HD 3690/3830 10688 Mpixels/sec
Radeon HD 6450 (OEM) 1GB 3000 Mpixels/sec
Difference: 7688 (256%)

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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Radeon HD 3690/3830

Amazon.com

Check prices at:

Radeon HD 6450 (OEM) 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 Radeon HD 3690/3830 Radeon HD 6450 (OEM) 1GB
Manufacturer AMD AMD
Year 2008 February 2011
Code Name RV670 PRO Caicos
Memory 256 MB 1024 MB
Core Speed 668 MHz 750 MHz
Memory Speed 1656 MHz 3600 MHz
Power (Max TDP) 75 watts 31 watts
Bandwidth 26496 MB/sec 28800 MB/sec
Texel Rate 10688 Mtexels/sec 6000 Mtexels/sec
Pixel Rate 10688 Mpixels/sec 3000 Mpixels/sec
Unified Shaders 320(64x5) 160
Texture Mapping Units 16 8
Render Output Units 16 4
Bus Type GDDR3 GDDR5
Bus Width 128-bit 64-bit
Fab Process 55 nm 40 nm
Transistors (Unknown) million 370 million
Bus PCIe 2.0 x16 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 3690/3830

Amazon.com

Check prices at:

Radeon HD 6450 (OEM) 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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