HIS Radeon R9 280, 285, 280X, 290X IceQ X²

HIS Radeon R9 280X iPower IceQ X² Turbo Specifications

The R9 280X is the second Tahiti graphics card in this review. Tahiti XT(L) features 2048 Stream Cores (just like GTX 980), 128 TMUs and 32 ROPs.

HIS R9 280X IceQ X2 is factory-overclocked to 1000/1050 MHz, that’s 50 MHz more in boost mode than the reference model.

This card has the fastest memory clock from all Radeon cards in this review. 3GB GDDR5 memory is clocked at 6 GHz effective speed, which gives us 288 GB/s of bandwidth thanks to 384-bit interface.

HIS R9 280X has four display outputs: DVI-I, HDMI and two Display Ports.

Radeon R9 280X is a direct rebrand of Radeon HD 7950 GHz Edition.

HIS Radeon R9 Series
	HIS R9 280 IceQ X² OC	HIS R9 285 IceQ X² OC	HIS R9 280X iPower IceQ X² Turbo	HIS R9 290X iPower IceQ X² Turbo
Picture
GPU Codename	Tahiti PRO	Tonga PRO	Tahiti XT	Hawaii XT
Unified Cores	1792	1792	2048	2816
TMUs	112	112	128	176
ROPs	32	32	32	64
Base Clock	847 MHz	938 MHz	1000 MHz	1040 MHz
Boost Clock	953 MHz	–	1050 MHz	–
Memory Clock	1250 MHz	1375 MHz	1500 MHz	1350 MHz
Memory	3GB GDDR5	2GB GDDR5	3GB GDDR5	4GB GDDR5
Memory Bus	384-bit	256-bit	384-bit	512-bit
Bandwidth	240 GB/s	176 GB/s	288 GB/s	346 GB/s
Power Connectors	6pin + 6pin	6pin + 6pin	8pin + 6pin	8pin + 8pin
TDP	200W	190W	250W	290W

HIS Radeon R9 280X iPower IceQ X² Turbo versus R9 280 IceQ X²

There are only two differences between these two cards. The power connector configuration (R9 280X has two 8pins) and the missing Turbo sticker.

Physical specifications:

• Width: 141 mm
• Length: 297 mm
• Height: 2-slot
• Weight: 956 g
• Cooling: IceQ X² (dual-fan)
• Display outputs: DVI-I, HDMI, 2x mini-DisplayPort

HIS Radeon R9 280X iPower IceQ X² Turbo package

While R9 280X has the same bundle as R9 280, it also came with CrossFire bridge, something you won’t find in R9 285 or R9 290(X) box (since those cards use different technology).