ATI 9700 with 5 years can do ray-tracing....
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ATI 9700 with 5 years can do ray-tracing....
AliG - 160GB/sec? Sorry but you've been on the funny sauce again. It's a 48 lane PCIe 2.0 Bridge chip from either PLX or IDT (more than likely PLX). Thats 16 lanes for each GPU, and 16 lanes for the bus connection, which means at most, 32GB/sec bandwidth between GPU's.
dont forget "magic" crossfire x sideport. :yepp: :p:Quote:
Originally Posted by Kai Robinson
Anyone hear about 4870's refusing to post? My new card bit the dust this morning during a reboot after working fine for the last 24 hours. There's another guy over in the general hardware forum who has the same problem on 2 different 4870's.
hey guys, UPS says my 4870's are out for delivery so i will be doing my own mini review of crossfire scaling and such and ill post it up sometime tommorrow night :) testbed will be the system in my sig
hmm maybe needs further investigation.Quote:
Originally Posted by halo112358
Did you oc your card already?
Also can you see any physical damage?
that's what the ATI representative said, don't shoot the messenger. I'll dig up the link. Only thing I don't get is why does ati need a fancy bridge chip when the 9800gx2 clearly did fine without one, all it does is add power consumption.Quote:
Originally Posted by Kai Robinson
And you said I'm on the funny sauce again, when was the first time?:rolleyes:
No physical damage, nothing different than when I plugged the card in in the first place. Of course I OC'd it, duh. No voltage bumps, nothing out of the ordinary except routine catalyst overdrive changes.Quote:
Originally Posted by Hornet331
http://www.hardforum.com/showthread.php?t=1319753
2x4870 real life comparison against GTX 280 from an owner. Nicely written IMO.
X2 cards aren't regular corssfire, GX2 aren't crossfire, crossfire works in a different way SLI does. Does this help out? :p:Quote:
Originally Posted by AliG
By OC you mean thru BIOS update with modded frequencies or thru ati catalyst?Quote:
Originally Posted by halo112358
What I can't believe is the power consumption of the 4870, especially in CF. It's just nuts.
I'm serious, I believe the only reason why they have the bridge chip is to increase the bandwidth between the two gpus for a faster interconnection as they've claimed no micro-stuttering with both the 3870x2 and 4870x2. Of course later on they admitted the micro-stuttering on the 3870x2 was horrible because the bridge chip didn't provide enough bandwidth (8 GB/s) and the extra latency made it worse than regular xfire.Quote:
Originally Posted by Calmatory
That was interesting info for me:Quote:
Originally Posted by AriciU
Anyone to confirm this from personal experience?Quote:
The GTX 200 series power saving features do NOT work on an Intel platform. That’s right. I thought I was the odd one out when I saw countless other websites posting about the down-clocks and down-voltages, whereby the GPU settles at 300Mhz Memory to 100Mhz etc when no 3D app is running. What some of them failed to state was that they only achieved this on an Nvidia platform; while ALL the reviews out there failed to warn consumers that this does NOT work on an Intel platform at all. The writeups out there further confuse you by stating the downclocks are achieved in drivers, while only the full hybrid power features, i.e., shutting down the GPU and offloads 2D to the onboard IGP require an Nvidia platform. They just don’t know what they are talking about.
This was confirmed after a 30 minute phone conversation with an XFX engineer, the manufacturer of my GTX 280.
What this translates to is that all the idle power consumption graphs you saw on reviews over the GTX 200 series do NOT apply to an Intel platform. Again, out of the 15 odd reviews out there, not one, I repeat, NOT A SINGLE ONE, bothered to state this clearly. Whats the user footprint in the real world with an Nvidia platform? 0.1% of the PC population?
The GPU temp does drop back to the 50s while idling in Windows, but the clocks do not scale back, which leads me to believe there is no real power savings.
Well, I know my GTX 280 downclocks fine on an X38 and P35 chipset. The power consumption figures I have seen follow the trend of it working when at idle.Quote:
Originally Posted by Lightman
If you mean clocking down when not in 3D,that works just fine for me on an Intel chipset.
Guess it works.Quote:
Edit:
There's been more than 1 response saying the downclock works. I stand corrected and it must have been due solely to my copy of the XFX card. The engineer I spoke to may not be in a very experienced position with the GTX 280 to identify whether its the card or the series at fault.
That guy sounds like an AMD/ATI infomercial though! It almost sounds too good to be true, but I'm rooting for the underdog here... hope it is true
what an opportunity... he can discredit intel and nv in one blow, and forgot to mention that atis own powersaving is not working right now. :rofl:Quote:
Originally Posted by m0da
Actually, it is in some cases and will soon be working with ALL cards. Only some of the first batch of cards had it disabled which should be fixed in a future driver release. Other cards had it working (most notably the MSI cards) without a problem.Quote:
Originally Posted by Hornet331
"Sorry for the wall of text, I hope you found the above a little more useful than a bunch of graphs from some teenage “me-too” review sites."Quote:
Originally Posted by AriciU
What bad have hardware sites ever done to this guy?? :down:
I stopped reading when he was attacking reviewers credibility and then proceeded to use his "trusty right foot" for temperature testing. :)
That, along with many other flaws/contradictions.
What flaws/contradictions did you observe?Quote:
Originally Posted by Tonucci
Sorry, Im not going through that again. I would have to re-read, taking notes :down:Quote:
Originally Posted by STaRGaZeR
would 850w psu be enough for 4870 1b cf?
Name brand, yes..... assuming the load of the rest of your system is "average".Quote:
Originally Posted by disruptfam