Radeon HD 5750 & HD 5450 Graphics Cards

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HD 5450 product brief.

While the HD 5450 is unlikely to debut to fervent fanfare, it's a significant release for the HTPC crowd. As a member of the HD 5000 family, it has the ability to bitstream Dolby TrueHD and DTS-HD Master Audio, a feature that until now, would've required the purchase of a $100+ graphics card (or an even more expensive sound card). Many HTPC enthusiasts have been waiting with bated breath for this one feature alone. The card also supports DirectX 11 of course, and the Eyefinity multi-display technology, though the reference sample we received does not as it lacks a DisplayPort connector.

Our Radeon HD 5450 sample.

Our HD 5450 review unit from ATI doesn't look much different from any other entry level graphics card, with a narrow, short low profile circuit board and standard outputs. The heatsink however is rather remarkable, being large enough to extend into the adjacent expansion slot. It's also an eye-catching blood red, a cosmetic touch rarely seen on a reference sample.

Technical specifications according to GPU-Z.

From a technical standpoint the HD 5450 is very close to slowest card from ATI's last generation, the HD 4350, with both having a 64-bit memory bus and 80 stream processors, though the 5450 has a higher core clock speed. The 5450 is also equipped with faster GDDR3 memory rather than the typical DDR2 used in their entry level cards. Our sample shipped with 1.1ns Samsung GDDR3 memory chips clocked at 900MHz, which is 100MHz higher the the reference maximum.

Specifications: ATI Radeon HD 5450
Process 40nm
Transistors 292M
Engine Clock 650 MHz
Stream Processors 80
Compute Performance 104 GFLOPS
Texture Units 8
Texture Fillrate 5.2 GTexels/s
ROPs 4
Pixel Fillrate 2.6 Gpixel/s
Z/Stencil 10.43 GSamples/s
Memory Type DDR3 / DDR2
Memory Clock Up to 800 MHz
Memory Data Rate Up to 1.8 Gbps
Memory Bandwidth Up to 12.8 GB/s
Typical Board Power 19.1W
Idle Board Power 6.4W

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