Technical data / specifications

The Radeon HD 5550 is powered by the Redwood LE graphics processor which differs from the Redwood Pro that powers the Radeon HD 5570. Indeed, the HD 5550 has only 320 SP and 550 MHz on the core while the HD 5570 is running at 650 MHz with 400SP. Anyway, these graphics processors are based on the RV870 and target entry market segment. Despite the fact that this card is part of the entry level market, Asus designed his own PCB which provides a red color with a single slot cooling system and a low profile PCB while the reference card designed by ATI/AMD uses a dual slot cooler and a full size PCB. Unfortunately the EAH5550's cooler isn't that silent, we even have to say that it's really noisy as it appears to not be regulated by the BIOS and not Asus' SmartDoctor software. To come back to the specs, DirectX 11 compatibility and 40 nm process, the card is powered by 8 ROP and 320 Shader Units with GDDR3 memory using a 128Bit bus wide interface.

	ASUS GT 430	Asus GT 440	Asus Radeon HD 5550	Radeon  HD 5570
Chip	GF108	GF108	Redwood LE	Redwood Pro
Process	40 nm	40 nm	40 nm	40 nm
Transistors	0.585 billion	0.585 billion	0.627 billion	0.627 billion
GPU clock	700 MHz	823 MHz	550 MHz	650 MHz
Shader clock	1'400 MHz	1'645 MHz	N/A MHz	N/A MHz
Memory	1024 MB DDR3	1024 MB GDDR5	1024 MB GDDR3	1024 MB GDDR3
Memory clock	800 MHz	800 MHz	800 MHz	900 MHz
Memory interface	128 Bit	128 Bit	128 Bit	128 Bit
Memory bandwidth	25'600 MB/s	51'200 MB/s	25'600 MB/s	28'800 MB/s
Shader Cores	96	96	320	400
ROPs	4 ROP	4 ROP	8 ROP	8 ROP
Shader model	SM 5	SM 5	SM 5	SM 5
Maximum board power	49 Watt	65 Watt	40 Watt	43 Watt
Price	$80	$100	$65	$80

Page 1 - Introduction	Page 7 - Unigine Heaven / Stone Giant
Page 2 - Specifications	Page 8 - World in Conflict / Resident Evil 5
Page 3 - Preview	Page 9 - Call of Juarez / Far Cry 2
Page 4 - Overclocking	Page 10 - Casual Gaming
Page 5 - Testing conditions	Page 11 - Video Playback
Page 6 - Futuremark	Page 12 - Conclusion

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