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#1 |
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Editor & Senior Moderator
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Athlon X2 7750 BE Unlocked to Quad-Core
Earlier this year, a Korean source had pointed out an easy method to enable a fourth core on the Phenom II X3. This was made possible by the way AMD has been designing its triple-core and dual-core processors based on the K10 "Stars" architecture: by disabling one or two cores on the quad-core die. "Sloppy" BIOS coding lead to the Phenom II X3 anomaly. It looks like a somewhat similar mod enables not one, but two cores on the sub-$100 Athlon X2 7750 Black Edition. A Korean technology website GiggleHD.com has reported a successful unlock of two cores.
The method is similar to that of the Phenom II X3 unlock: using flaws in BIOS code to enable cores, by enabling the "Advanced Clock Calibration" feature in the BIOS setup. The OS, Windows XP SP3, was able to see the processor as a "AMD Phenom(tm) FX-7750", while CPU-Z reads the name string correctly and lists the core count as 4. The motherboard in use is an ASRock A790GX/128M. ![]() Source: Gigglehd.com Last edited by btarunr; Apr 25, 2009 at 02:39 PM. |
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#2 |
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That explains the high power consumption of the chip. It's a native quad. Seems like AMD designed only two CPUs: Phenom and Phenom II, and they disable parts of them to get a complete market coverage.
I would rather like to see more efficient native dual- and tricores in the future. |
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#3 |
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Oh no, not again
. Why do they keep doing this? To save on material?
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Lappy: HP 6720s - Intel C2D T2390, 2GB DDR2, 250GB Harddrive, Intel GME965, DVD Rewriter, Card Reader, Vista 32 Home Premium SP1 ![]() ^^ - Stefanels did this! |
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#4 |
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i wonder what mobo they used lol
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#5 |
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I knew I should have picked up a 7750BE when I had the chance...
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#6 |
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Can't wait to see more
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#7 |
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AMD always so cool
! I am waiting for the new Phenom II X2 and hopfully will get X4 mod too...
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#8 |
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Me suspects a plot by AMD to rule the (CPU) world
![]() Seriously, think about it: AMD use all native-quads for their different lineups, and one day, slips a bios or some patch that unlocks dormant cores... if its true, AMD are w1zzards lol. This gives their processors so much value, alot of heads (and wallets) will turn.
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#9 |
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Nice cheap quad !!
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#10 |
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I enjoyed that about the world supremacy, sounds cool
) The only cath is that selling quad-cores for the price of dual-cores amid tough economical climate isn't exaclty what AMD needs right now. I would enjoy a crippled Phenom sold as a single-core Sempron, however. Now THAT would be a bargain ))
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#11 |
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that's AWESOME. i might just have to build a whole entire computer because this is just a sick deal.
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#12 |
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^ Dont forget this isn't 100% sure and there is no guarantee whatsoever.
About what npp said: its all about volume. sell thousands of cheap parts, instead of hundreds of more expensive ones. if the average joe see the potential in buying a dual-core which is dirt-cheap, and unlocking it to tri or quad, he will sure be happy and buy loads of these chips. this has a good profit potential for AMD.
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AMD-ATI FTW! “The 8800Ultra rocks. How many people can afford one? Not many. Do we all want one? Everyone but the ATI fanbois but they secretly use one in the closet.” -Palit_Guy
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#13 |
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Looks like I'm gonna have to pull the 7750 back out and into my board on Monday to try this out.
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#14 |
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Ima feels AMD did this on purpose so as to not trigger any suspicion of uncompetitiveness. Selling quads for a measly price disguised as a "fluke".
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#15 | ||
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The Knife in your Back
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Quote:
Quote:
Fast forward to a few weeks ago when I got my gf a 7750, I bumped the voltage up a few ticks, uped the multi to 3.3ghz and bam, no one issue. Thats on a stock cooler. I lined some 120mm's up to blow on the HS and now it runs at 39c under load, gonna go for 3.4ghz or more 24/7 clocks, that would have been very difficult to pull off in the 9850 or 9950. So they strategy in my mind is working fantastically!
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#16 |
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Bird of Prey
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lOOKS LIKE I NEED TO get me a sb750 board :_
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=-TheEagle-= ![]() http://www.heatware.com/eval.php?id=62454 “You crazy? Surfing any website without an antivirus is like freaking with a dirty woman without protection” -OzzmanFloyd120 - Edited for content and clarity
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#17 |
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#18 |
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The Knife in your Back
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I already did a bit of testing, it's been set on Auto since I got it, that didn't do it. And setting all cores to 0% or -2% didn't unlock mine. But I got bored testing and bumped it up to 3.4ghz and 1.312v and stressing the crap out of it now, just passed wPrime 1024, such a nice little proc!
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![]() Youtube - The WarZ Myths + Gameplay, BF3 Weapon Reviews and more Dual Loop HAF 922 Build | Dxtory and x264 Codec Guide “Daniel Craig is my Wookiee bitch now!” -Harrison Ford |
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#19 | |
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#20 | |
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I know I can unlock my 720BE on the BIOS version before this one, which was the first to support PII, and now I can't on the newer one (the older version was so buggy it made overclocking a chore). |
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#21 |
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#22 |
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wait till they release a dualcore that is a native octa core
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#23 | |
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Quote:
![]() And oh make sure that hack is set for NV boards too ![]() But still PII rules
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#24 |
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http://gigglehd.com/zbxe/2249831#7
J.J Drangon did test in 3DMark for understand difference between Unlocked Kuma and Default Kuma. |
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#25 | |
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