The Radeon R9 280X Review: Feat. Asus & XFX - Meet The Radeon 200 Series
by Ryan Smith on October 8, 2013 12:01 AM ESTOverclocking
With our look at the stock performance of our 280X cards complete, let’s take a brief look at overclocking.
When it comes to overclocking this is going to be a somewhat unfair competition for the two cards. The Asus card has by the very necessity of its existence already been binned. Furthermore while the Asus card supports voltage adjustments the XFX card does not (MSI Afterburner says it does, but adjusting the value has no effect). As such we get to drive what’s already a better GPU harder and with more voltage than the other. Still, this will give us the chance to see where everything will top out at.
| Radeon R9 280X Overclocking | ||||
| XFX Radeon R9 280X DD | Asus Radeon R9 280X DCU II TOP | |||
| Shipping Core Clock | 850MHz | 970MHz | ||
| Shipping Boost Clock | 1000MHz | 1070Mhz | ||
| Shipping Memory Clock | 6GHz | 6.4GHz | ||
| Shipping Boost Voltage | 1.2v | 1.2v | ||
| Overclock Core Clock | 880MHz | 1010MHz | ||
| Overclock Boost Clock | 1030MHz | 1110MHz | ||
| Overclock Memory Clock | 6.6GHz | 6.8GHz | ||
| Overclock Max Boost Voltage | 1.2v | 1.263v | ||
As it turns out, neither card overclocked by very much. The XFX card, lacking additional voltage, could only do 30MHz more, for a 4% base/3% boost overclock. Better luck was found on the memory with a 600MHz (10%) overclock there. The Asus card meanwhile was good for 40MHz more, for a 4% base/4% boost overclock, while its memory could do an additional 800MHz (13%). But at the same time this required dialing the voltage up to 1.263v – as high as we’re willing to go for this card. The power cost of doing that will be extreme.
With our 280X cards primarily bottlenecked by GPU performance as opposed to memory performance, the performance gains from our overclocking adventure is limited. 3% on average for both cards is 3% for free, but it’s barely a useful overclock. We typically need 5% before overclocks start becoming interesting and significant enough to improve playability or make higher graphical settings practical.
To the credit of the Asus card and its cooler, despite the increased clockspeeds, voltage, and power consumption, it’s able to keep GPU temperatures and load noise to reasonable levels given the circumstances. Still, with the increase in power required to achieve this overclock (particularly in the worst case scenario of FurMark) it’s hard to argue that the additional overclocking was worth the performance gains. With such an extensive factory overclock this is a card that may be better off left at factory clocks.
The XFX card meanwhile suffers much less of a power ramp up due to the lack of voltage control, but we’re still looking at something of a wash on the power/performance front.
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maybeimwrong - Tuesday, October 8, 2013 - link
Perhaps I'm in the minority here, but I am concerned that I have to "Return to Anandtech" from a major new product review. This site is not AMDtech. If you want to have a special AMD section that aggregates relevant content, I'm fine with that. I am not fine with reviews being visible only in a place that presents no means of accessing general content on the site. Presenting review articles in this way is a terrible decision, and readers will stop trusting your content if you keep it up. I say this as a big fan of the site: please change the way "AMD" articles are handled immediately.SolMiester - Tuesday, October 8, 2013 - link
Hmmm, just noticed that....buy out complete?toyotabedzrock - Tuesday, October 8, 2013 - link
TrueAudio might die because they didn't add it to all their cards, very lazy and half baked.rtho782 - Tuesday, October 8, 2013 - link
Can you Crossfire an R280 with a 7970? Would make for a cheap upgrade path as they are basically the same card...hodakaracer96 - Tuesday, October 8, 2013 - link
I currently own a 2-way sli 770 setup so I may be biased. It seems NVIDIA can still charge a premuim (maybe $50) over the R9 280x due to much better SLI/crossfire capiblity (I know the newest AMD beta drivers fix latency issues, but the fact NVIDIA does frame pacing in hardware makes me feel better about it) and better performance/watt. My room gets pretty toasty and my 750 watt power supply is already on the edge. even an extra 50 watts from 2 - R9280x's would be unwanted.Frenetic Pony - Tuesday, October 8, 2013 - link
When it was AMD was firing key positions I knew it was bad, but now we know specifically HOW bad. Not a singe new GPU. I don't want Nvidia to have a monopoly damn it, maybe AMD should be looking at plans to sell to someone like Qualcomm if this holiday season doesn't hit it big for them.FuriousPop - Tuesday, October 8, 2013 - link
Aren't these the reference cards? So won't there be more tweaks, different coolers, OC's etc when the rest of them get a hold of it and start making their changes?If these truelly are reference cards, i thought these looked pretty good considering...
I understand an Asus one is tested - to be fair i have 2xasus 7970's tops, they tend to be slighty slower then the rest of the pack by little numbers however with better temps/noise lvls...
Bring on the 7970 bring bro aka. Titan Killer!
bwat47 - Monday, December 9, 2013 - link
Nvidia has done re-badges like this too, they both do it.b3nzint - Tuesday, October 8, 2013 - link
I see the cooler on r9-290x got 3 air tunnel at the back. Is ref. r9-280x will use the same cooler?Futureman666 - Tuesday, October 8, 2013 - link
now let's see NVidia lower the price of the GTX 770 4 GB so I can buy two of them and upgrade my rig . The price of those card are not right at the moment they should have been way lower . hope that AMD R9 will put enough pressure on NVidia . The only sour on this review seems once again AMD drivers (which seems to suck time and time again ) maybe Ryan did not have enough time to try 2 R9 280x card in crossfire .. I would have been impressed to see a comparison between the NVidia offerings 2 x gtx 760 and 2 x Gtx 770 in sli versus ... Maybe the damn drivers where not ready again to support these 2 cards in crossfire .. i'm eager to see the results