AMD Radeon R9 285 Review

AMD Radeon R9 285 - Tonga has arrived

In this review we look at the new AMD Radeon R9 285. Yes this is the new Tonga GPU based product. Tonga should bring the price from high-end gaming towards 249 USD, while (according to AMD) you can game with good image quality settings at WQHD - 2560x1440. Follow us into this review where we'll look at temperatures, noise, performance and go with the latest game titles on the globe.
So as mentioned in the first paragraph, the Radeon R9 285 is based on a the new Tonga GPU. It's still built on the 28nm node from Global Foundries and features bit of a re-design applying the latest architectural improvements. A big focus of the Tonga GPU is actually power efficiency as we'll show you in this review. Tonga retains the basic technologies of the Radeon lineup such as Mantle, TrueAudio and XDMA for CrossFire support. The GPU actually has 2048 shader processors running over 32 compute units with 128 texture memory units. 
The initial consumer graphics card based on Tonga now is the Radeon R9 285, it has 1792 activated stream processors making it perform at GeForce GTX 760 and Radeon HD 7970 level performance levels but with better thermals and lower power consumption. Performance wise this product is going to sit in-between the 280 and 280X. Most of the cards will have two 6-pin power PEG (PCI Express Graphics) headers to give the tweaking experience a little more room next to the 4+2 PWM phase power design. Overall a great card to play the latest games with whilst offering a good memory size versus good price versus the Full HD  / 1080P monitor resolution.
AMD actually releases the card as the perfect WQHD (2560x1440) resolution gaming alternative at the 250 USD level. We received the ASUS R9 285 Strix edition. Head over to the next page where we'll start-up a photo-shoot first though.

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Sapphire launched R9 285 ITX Compact display card

Shortly new GPU, AMD's top partners that delivered small design display card.

Introduction of compact design for the now popular ITX chassis performance level graphics card is nothing new. But this Radeon R9 285 published but two days, we saw ITX special design card from Sapphire's - R9 285 ITX Compact Edition.

Radeon R9 285 ITX Compact Edition, a length of about about 17CM, standard 2-slot thickness design, the radiator part of the grounds is a copper base aluminum fins figure looks, coupled with 10CM fan heat pipe design. Power part is the use of two PCIe 6PIN as the power input. GPU of course, is to use the latest Tonga GPU, has 1792SP's GCN 1.1 architecture, with the 256-bit of 2GB GDDR5, the clock part 918Mhz / 5.5GHz, Sapphire will launch a small margin for overclocking OC edition.

Other parts, R9 285 ITX Compact Edition will be with a push switch, can switch to Legacy mode VGA BIOS and UEFI mode is fully optimized for UEFI BIOS. Output interface has two mini-DisplayPort 1.2, HDMI 1.4a and Dual-Link DVI.

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AMD to unveil Radeon R9 285 on August 23rd

In few days we will learn new details about Tonga graphics processing unit, as AMD is holding a special event celebrating 30 years of graphics innovation.

AMD Radeon R9 285 and R9 285X

This event will be the first place where AMD officially introduces Tonga GPU. Unfortunately, it is just a paper launch.

First is R9 285, equipped with Tonga PRO, which will be available early September. Faster Tonga XT-based Radeon R9 285X will arrive few weeks later. So yes, there are two cards coming, both replacing Tahiti R9 280 series.

Looking at the graphic above, you may find it disappointing that this event is just about Tonga. It is unclear, whether AMD is planning to show more than just a mid-range GPU. There are some rumors that AMD may give us a peak at a new roadmap, or maybe even first samples with HBM memory. AMD is currently working on Hawaii XTX, Maui and Iceland GPUs, all of them could be shown at the event, however we find it highly unlikely. The only processor that is confirmed to be shown at the event is Tonga.

Source: http://videocardz.com/51246/amd-unveil-radeon-r9-285-august-23rd

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AMD Radeon R9 285 with Tonga GPU

AMD Radeon R9 285 smiles for camera

Radeon R9 285 is essentially R9 270X with R9 280 performance. This card is allegedly equipped with Tonga PRO, thus we shall expect R9 285X with Tonga XT sometime soon. R9 285 is a small card, so if you expect triple-fan coolers, that is not likely to happen at launch (but some AIBs will surely try it). Either way, we heard that R9 285 will even be available in mini-ITX form factor.

Radeon R9 285 has 2GB GDDR5 memory across 256b interface. That’s all we know for sure. The core clock is reported at 918 MHz and memory clock is 1375 MHz (5500 MHz effective), that said we have 176 GB/s bandwidth. Normally I would at least put speculated specs here, but since we are not yet sure if Tonga PRO is a fact, I decided to wait for something more solid. The full Tonga chip has the same number of unified cores as Tahiti (2048), the only question is, how many cores does R9 285 have?

All AIB cards have the same display output configuration: two DVIs, one HDMI and one DisplayPort.

The fact that first AIB cards are starting to pop up, R9 285 launch should happen somewhere in the next two weeks.

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

Sapphire Radeon R9 285 Dual-X
 

XFX Radeon R9 285

 

HIS Radeon R9 285 IceQX2 Mini

 

Last but not least, Radeon R9 285 will be the third card to utilize XDMA Crossfire, there are no CF fingers on these cards.

Source: http://videocardz.com/51157/amd-radeon-r9-285-tonga-gpu-pictured

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