With the Dual-X R9 280 OC Edition, Sapphire has a Radeon R9 280 graphics card in their portfolio, which is based on a custom PCB as well as a custom cooler. Apart from that this pixel accelerator also features an attractive price and therefore we're rather curious to find out what this card is actually capable of.


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Presentation

Today we're going to have a close look at Sapphire's R9 280 Dual-X card, that features a dual fan custom cooler named Dual-X and in case of the PCB there is also a custom design from Sapphire. With it's black and blue color scheme this card looks just about perfect and luckily the manufacturer also decided to overclock the GPU to 940MHz.



Since it is the Dual-X version of the Sapphire Radeon R9 280 OC Edition series, the card features a factory overclock of 7 MHz on the GPU, which is actually tiny. While the reference Radeon R9 280 GPU is set to work at 933 MHz, the Sapphire Dual-X R9 280 OC Edition works at 850MHz for the base clock and 940 MHz for the turbo clock.

Unfortunately, no factory overclocking was done on the 3GB of GDDR5 memory that remains at the recommended 1'250 MHz (5'000 MHz effective).

Specifications

	Sapphire Dual-X R9 280	Radeon R9 280	Radeon R9 280X
Chip	Tahiti Pro2	Tahiti Pro2	Tahiti XT2/L
Process	28 nm	28 nm	28 nm
Transistors	4.31 billion	4.31 billion	4.31 billion
GPU clock	850 MHz	827 MHz	850 MHz
GPU Boost clock	940 MHz	933 MHz	1'000 MHz
Memory GDDR5	3'072 MB	3'072 MB	3'072 MB
Memory clock	1'250 (5'000) MHz	1'250 (5'000) MHz	1'500 (6'000) MHz
Memory interface	384 Bit	384 Bit	384 Bit
Memory bandwidth	240.0 GB/s	240.0 GB/s	288 GB/s
Shader Cores	1'792	1'792	2'048
TMUs	112	112	128
ROPs	32	32	32
PCB Type	Custom Design	Reference Design	Reference Design
Slots	2	2	2
Cooler	Dual-X	AMD Reference	AMD Reference

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Page 1 - Presentation / Specifications	Page 11 - DIRT Showdown
Page 2 - The card	Page 12 - Far Cry 3
Page 3 - Photo Gallery / Delivery	Page 13 - Sleeping Dogs
Page 4 - Test Setup	Page 14 - The Elder Scrolls V: Skyrim
Page 5 - 3DMark Fire Strike	Page 15 - Metro: Last Light
Page 6 - Unigine Heaven 4.0	Page 16 - GTA V
Page 7 - BattleField 3	Page 17 - Power Consumption
Page 8 - Bioshock Infinite	Page 18 - Temperatures / Noise levels
Page 9 - Crysis 3	Page 19 - Performance/Price & Performance/Watt
Page 10 - Call of Duty Black Ops 2	Page 20 - Conclusion