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AMD Radeon R9 270 Review: Replacing The Radeon HD 7800s

AMD Radeon R9 270 Review: Replacing The Radeon HD 7800s
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AMD packages up another sub-$200 graphics card, this time calling it the Radeon R9 270. We expected a Radeon HD 7850 replacement, but received something quite different. Is it a worthwhile step up, or just a familiar piece of hardware with a paint job?

Particularly after the excitement of Radeon R9 290X, 290, and GeForce GTX 780 Ti, it's hard to get excited about re-branded products from previous-gen GPUs. Yet, from time to time, both AMD and Nvidia have been guilty of the recycling old processors and giving them new names. The worst cases of this are when a card with the same exact specifications, shader count, clock rates, and all, gets repackaged, adding confusion to the marketplace. Not everyone jumps online to read graphics card reviews, leaving a lot of people vulnerable to an "upgrade" they didn't need.

Re-branding is a little easier to accept if it's accompanied by performance increases along the price band. Nvidia did this with its GeForce GTX 770, upping speed and dropping cost. AMD's Radeon R9 280X similarly improved performance versus the Radeon HD 7970 and made Tahiti more affordable at the same time.

Today, AMD introduces another re-branded graphics card: the Radeon R9 270. Apparently, the company felt it wasn't enough to rename the product itself; it also started using Curacao to refer to the GPU we know as Pitcairn. We're not sure why. It's still calling the R9 280X's processor Tahiti, after all. But here's Curacao/Pitcairn again, in all of its glory:

More than a year and a half ago we introduced you to this GPU's specifications in AMD Radeon HD 7870 And 7850 Review: Pitcairn Gets Benchmarked:

"Pitcairn hosts 20 compute units, each with four vector units made up of 16 stream processors and a single texture unit. In an uncut GPU, those numbers multiply out to 1280 total shaders and 80 texture units. AMD shears off four compute units from Pitcairn to create the Radeon HD 7850, resulting in 1024 shaders and 64 texture units.

The GPU’s back-end is made up of eight render partitions, each with four full-color ROPs, totaling 32 ROPs. Four 64-bit memory controllers yield an aggregate 256-bit memory bus."

So if the Radeon R9 270X replaced the Radeon HD 7870, then we should expect its R9 270 to displace the cut-down Radeon HD 7850, right? But the comparison gets interesting when we look at the specs, clock rates, and prices of AMD's current line-up.


Radeon HD 7850Radeon HD 7870Radeon R9 270
Radeon R9 270X
Shader Cores
1024
1280
12801280
Texture Units
64808080
Color ROPs
32
323232
Fabrication process
28 nm
28 nm28 nm28 nm
Core (Shader) Clock
860 MHz
1000 MHz
925 MHz
1050 MHz
Memory Clock
1200 MHz GDDR5
1200 MHz GDDR51400 MHz GDDR51400 MHz GDDR5
Memory Bus
256-bit
256-bit256-bit256-bit
Memory Bandwidth
153.6 GB/s
153.6 GB/s179.2 GB/s179.2 GB/s
Idle/Max Thermal
Design Power
130 W
175 W
150 W
180 W
Power Connectors:
1 x 6-pin
2 x 6-pin1 x 6-pin2 x 6-pin
Price
$140-$220
(Newegg)
$170-$230
(Newegg)
$180
(MSRP)
$200-$220
(Newegg)

I was surprised to find that the Radeon R9 270 is not an overclocked Radeon HD 7850, as I expected. Rather, it's essentially a Radeon HD 7870 with a 75 MHz-slower core, 200 MHz-faster GDDR5 memory, a 25 W-lower TDP, and a $180 price tag.

First, let's consider those clock rates. The slower core frequency and faster RAM seems designed to deliver performance on par with the old Radeon HD 7870. This doesn't really make sense, though. Why down-clock Pitcairn and spend more on pricier GDDR5? The only hypothesis I have is that AMD wanted the 7870's performance, while ducking under the limit of one six-pin auxiliary power connector. As you can see, the Radeon R9 270 has a 150 W TDP compared to the Radeon HD 7870's 175 W ceiling. Both the Radeon R9 270X and HD 7870 require two of those connectors.

As for the $180 price tag, that's $20 cheaper than the recently-released Radeon R9 270X, a card with the same 1400 MHz memory clock, but a 125 MHz-higher core frequency (1050 MHz). Assuming boards really sell for $180 at launch, the Radeon R9 270 will end up $10 below the street price of a GeForce GTX 660, its main competitor from Nvidia. That also pushes the 270 below the average price of Radeon HD 7870, an offering we've seen heavily discounted over the past few months. This was only temporary as retailers sought to clear out inventory. We already know from AMD that the Radeon HD 7870 and 7850 are expected to disappear soon.

It's also worth noting that leveraging the Pitcairn/Curacao processor means the Radeon R9 270 and 270X do not support AMD's new TrueAudio feature. You'd need a Radeon R7 260 or Radeon R9 290 series card for that. AMD's Mantle API is supported, as it is with all GCN-based parts, but it remains to be seen how successful that will be.

Be warned that the new Radeon R9 series (270, 270X, 280X, 290, and 290X) are not part of AMD's Never Settle bundle. The good news is that AMD teamed up with DICE to provide a copy of Battlefield 4 for anyone buying one of those cards starting today. Picking up a Radeon R7 260X won't get you Battlefield 4, but you will get to choose two game titles from AMD's Silver tier of the company's Never Settle bundle program.

Update: It was recently brought to our attention that AMD represented its Battlefield 4 promotion inaccurately; it relies on both the participating retailer and add-in board partners to choose the models that include a game voucher. In addition, there is a limit of 1000 of these vouchers available. A Newegg search for "Radeon Battlefield 4" results in five hits (one Radeon R9 290 and four R9 290Xs).

So the big question now is: how does the Radeon R9 270 perform compared to AMD's Radeon HD 7870? And is the newer board a good value compared to the GeForce GTX 660? We have a lot of benchmarks on the way to help answer that question. First, let's have a look at our test sample.

Sapphire's Dual-X R9 270

Sapphire's Dual-X R9 270 features a mild factory overclock, its core operating at 945 MHz (up from 925 MHz) and GDDR5 memory at the reference 1400 MHz frequency. Our Radeon R9 270 benchmarks are run at AMD's reference clock rates, though.

The Dual-X card sports Sapphire's custom cooling solution, featuring dual axial fans.

Sapphire's Radeon R9 270 has two dual-link DVI connectors, HDMI, and DisplayPort outputs. Because this board's power ceiling is 150 W, it only has one six-pin auxiliary power input. AMD dictates that the R9 270 only feature one CrossFire connector, limiting you to dual-card configurations.

Display 31 Comments.
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  • 1 Hide
    16bit , November 12, 2013 9:22 PM
    Seems like a pretty solid card, but I would like to see benchmarks that include some of the higher end cards. Curious how big the gap between the 280x and the 270 is.
  • 3 Hide
    CaptainTom , November 12, 2013 9:48 PM
    I actually like this card... Make an overclocking review!
  • -3 Hide
    esrever , November 12, 2013 10:16 PM
    I feel like they don't need a 270x now since board partners could just have released OCed versions of this to fill the slot. Strange that they don't have a 7850 replacement.
  • 2 Hide
    m32 , November 12, 2013 10:33 PM
    Quote:
    I actually like this card... Make an overclocking review!


    I doubt this card has too much headroom in that department. The 6-pin is a gift and a curse.
  • 5 Hide
    wdmfiber , November 12, 2013 10:43 PM
    The chart need a typo fixed. The 7870 is I incorrectly labeled as 40nm, but it's built on the 28nm fab process; just like everything else. .

    Frig... we've been stuck at 28nm for so long it's just "understood". You could get-away with leaving that whole column out.
  • -1 Hide
    Sakkura , November 12, 2013 11:04 PM
    Wonder if there'll be any versions with two 6-pin power connectors. They could be great value for overclocking.
  • -2 Hide
    bustapr , November 13, 2013 3:22 AM
    I wonder, how exactly does overclocking work with these cards? Wouldnt it just be varying its fan speeds whenever it hits a certain temperature and sends clockspeeds all over the place?
  • 1 Hide
    AMD Radeon , November 13, 2013 4:16 AM
    i am waiting for a price cut for R9 series

    the previous version, 7870 GHz edition and 7870 XT is now so cheap
  • -1 Hide
    tomfreak , November 13, 2013 4:29 AM
    I will not be surprise they gonna release a R9-260X (R9 version of 260X) that is a rebrand of 7850. A curacao chip with a broken CU has to go somewhere.....
  • 0 Hide
    witcherx , November 13, 2013 4:54 AM
    why not radeon 7850 2gb?
  • 0 Hide
    Da W , November 13, 2013 5:30 AM
    How about crossfire? tri-crossfire? That would be interesting to see, 3x 270 with one 6pin connector each, instead of buying the monster that 290X is.
  • 0 Hide
    rolli59 , November 13, 2013 6:20 AM
    So are they leaving room for R9 265X? Eventually there must be a card with disabled Shader Cores always has been, that is how they maximize their yields. Unless of course they keep the 7850 in the lineup like they have done with the lower end 6xxx series cards.
  • 0 Hide
    Onus , November 13, 2013 7:04 AM
    Da, this card only has one Crossfire connector, so tri-Crossfire will not be possible.
    I wonder if it will Crossfire with a HD7870 though.
  • -1 Hide
    tomc100 , November 13, 2013 7:16 AM
    Not sure why tomshardware is using COD Ghosts as a performance test. This game is one of the most poorly optimized game ever made right next to that Jurassic Park game in the 90's called Trespasser. The game is using the same Quake engine and is known to run poorly on SLI and crossfire.
  • 0 Hide
    TeraMedia , November 13, 2013 7:29 AM
    It looks like they intentionally hamstrung this card against OCing with that single 6-pin. There appears to be a bit of power headroom, but not much. Bumping freq and/or V will eat that up pretty quickly. It makes sense if they don't want to cannibalize 270X, I suppose, but oh well.
  • 0 Hide
    slomo4sho , November 13, 2013 7:39 AM
    An underclocked 270X that is $20 less. I am sure it can be clocked back up to the speed of the 270X at the very least. Look forward to some OC results.
  • 0 Hide
    Onus , November 13, 2013 7:43 AM
    That's the reference model. You can bet some board partners are going to either put an 8-pin on it or a pair of 6-pin connectors, just for OCing.
    I'm still looking forward to a review of the R7s...
  • 0 Hide
    ZEPd3Z , November 13, 2013 9:20 AM
    So will this crossfire with an HD 7870 like the R9 280X with an HD 7970?
  • 0 Hide
    iceclock , November 13, 2013 9:25 AM
    looking good, hope the prices of the old 7870 goes down as the 270s and 280s come in stock.

  • 0 Hide
    mapesdhs , November 13, 2013 10:36 AM
    So basically the card is rereleased 20 months after initial launch, with a new
    name and tweaked performance that's slower or little better than the original,
    and pretty much the same price point. Can someone explain where one can
    find Moore's Law in all this? IMO it all looks like a waste of time. I mean, after
    20 months, this is all we get? Not impressed at all. I'd hoped AMD wouldn't
    go down the road of rebranding (it was bad enough with the 8800GT fiasco),
    but I guess they figure enough people will fall for the PR. I foresee yet more
    cards on eBay from disgruntled gamers who upgraded only to observe little
    or no speed gain.

    The 290/290X at least offer something tangible, whether it's solid performance,
    good prices, or both, sans noise issues, but these reissued older GPUs really
    irritate me. Reminds me of the lacklustre improvements we've had in CPU power,
    the halting of price drops for SSDs, the shooting back up of RAM prices since
    Feb, and so on. If the PC market is shrinking, I don't think one can blame it
    entirely on the rise of tablets & suchlike, or the dislike many have of Win8;
    instead, IMO these days there are simply fewer items that are worth buying
    as upgrades. All this stalls demand, people stop buying, or buy less often
    as they wait for something better, which makes it look like the market is
    shrinking when infact users are just waiting for products that are worthy
    of their cash.

    Sometimes I think it's a pity that all the various 3rd-party GPU makers can't
    combine their own talents and come up with a completely separate GPU
    development path to NVIDIA and AMD. Surely there's enough skill & knowledge
    by now at ASUS, Sapphire, Gigabyte, EVGA, HIS, etc., to do this. Oh if only...

    Ian.

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