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Thursday, April 07, 2011
AMD Releases The Radeon HD 6450 For HTPCs

AMD today released the Radeon HD 6450, a replacement of the Radeon HD 5450 in the low-end market.

Based on the "Caicos" GPU, a member of AMD's "Northern Island" family of GPUs, the Radeon HD 6450 features two SIMD, 160 SPs (double from the 5450) and 8 texture units. It's core clock is 750MHz and the memory clock is 900MHz (3.6GHz data rate).

The 6450 has 370M transistors at a die size of 67mm2, while TDP has gone up from 6.4W at idle and 19W (of the Radeon HD 5450) at load to 9W at idle and 27W at load. 27W is not much to handle even under passive cooling configurations.

  AMD Radeon HD 5670 AMD Radeon HD 5570 AMD Radeon HD 6450 AMD Radeon HD 5450
Stream Processors 400 400 160 80
Texture Units 20 20 8 8
ROPs 8 8 4 4
Core Clock 775MHz 650 750MHz 650MHz
Memory Clock 1000MHz (4000MHz data rate) GDDR5 900MHz (1800MHz data rate) DDR3 900MHz (3.6GHz data rate) GDDR5 800MHz (1600MHz data rate) DDR3
Memory Bus Width 128-bit 128-bit 64-bit 64-bit
Frame Buffer 1GB / 512MB 1GB 512MB 1GB / 512MB
Transistor Count 627M 627M 370M 292M
TDP 61W 42.7W 27W 19.1W
Manufacturing Process TSMC 40nm TSMC 40nm TSMC 40nm TSMC 40nm
Price Point $70-$85 $50-$70 $55 $25-$50

Display connectivity include a DL-DVI port, VGA port and a full size DisplayPort on the card but AMD's partners may implement an HDMI port instead of the DisplayPort, especially for cards sold for HTPC use.

The 6450 also supports decoding of Blu-ray 3D by taking advantage of the UVD3, which decodes MVC (frame-packed H.264) streams, along with full MPEG-2 decoding and MPEG-4 ASP (DivX/XviD) decoding.

AMD is primarily marketing the Radeon HD 6450 as an upgrade for Intel Sandy Bridge users, highlighting the card's DX11 capabilities - although don't expect to play DX11 games in high detail or tessellation with this card.

The MSRP of the HD 6450 is $55, facing the competition from AMD's own 5450, the 5550/5570, Nvidia' s GT 220 and GT 430 cards.

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