AMD发布 Tonga核心 GPU Radeon R9 285

寂寞艹无聊

原文地址：http://videocardz.com/51279/amd-announces-radeon-r9-285-tonga-gpu

This post will be updated once more information will be available.AMD has announced Radeon R9 285 during 30 Years of Graphics and Gaming Innovation event.AMD Radeon R9 285AMD R9 285 is equipped with Tonga PRO GPU, which sports 1792 Stream Processors. Card is equipped with 2 or 4GB GDDR5 memory which is operating at 5.5 GHz. The core clock is set to 918 MHz. The biggest difference between Tonga and Tahiti is the width of memory bus. The R9 285 has only 256b interface, which will surely bottleneck serious UltraHD gaming.AMD Radeon R9 285 does support DirectX 12 and Mantle.AMD Radeon R9 285 will be released on September 2nd for $249.AMD Radeon R9 285XOne month later, AMD will officially introduce Tonga XT variant, which will sport 2048 Stream Cores. The exact specifications where not yet revealed.

AMD Radeon R9 280 Series
	Radeon R9 280	Radeon R9 285	Radeon R9 280X	Radeon R9 285X
GPU Codename	Tahiti PRO	Tonga PRO	Tahiti XT	Tonga XT
Unified Cores	1792	1792	2048	2048
TMUs	112	112	128	128
ROPs	32	32	32	32
Base Clock	827 MHz	?	850 MHz	?
Boost Clock	933 MHz	918 MHz	1000 MHz	?
Memory Clock	1250 MHz	1375 MHz	1500 MHz	?
Memory	3GB GDDR5	2GB/4GB GDDR5	3GB GDDR5	?
Memory Bus	384-bit	256-bit	384-bit	?
Bandiwdth	240 GB/s	176 GB/s	288 GB/s	?
Connectors	6-pin + 6-pin	6-pin + 6-pin	8-pin + 6-pin	?
TDP	200W	190W	250W	200W?
Launch Date	March 2014	September 2014	October 2013	September 2014
MSRP	$279	$249	$299	$279?

ASUS Radeon R9 285 STRIX

HIS Radeon R9 285

Sapphire Radeon R9 285

XFX Radeon R9 285