The Mobile Barton processor has recently become the Socket A overclocking chip of choice. Why?
There are several reasons. The first, is the unlocked multiplier of all Mobile Barton processors. As many of us know, all Desktop Barton processors produced after week 39 of 2003 were produced with a hard multiplier lock, effectively disabling multiplier changes to the processors.
This hinders overclockability of the chips, as a greater FSB overclock is required, due to the locked and unchangeable multiplier. A FSB overclock is often hard, and expensive, to achieve, as it requires high-quality RAM, and a good, or lucky, motherboard chipset. The unlocked multiplier of the Mobile Bartons is a loophole of sorts in AMD’s processor locking policy.
All Mobile AMD processors support a feature called PowerNow! (an integral part of AMD’s Mobile processor marketing plan – it isn’t going anywhere soon), which alters a mobile processor’s speed based on the CPU load. So, if the laptop machine a Mobile chip is installed in is simply idling, or being used to write up a word document, the PowerNow! feature will manipulate the multiplier of the processor on-the-fly to underclock the chip, making it use less battery power. If the laptop is being used for some CPU intensive work, such as running Prime95, PowerNow! will manipulate the multiplier of the processor on-the-fly to raise the speed of the CPU; to accomodate the intensive program being run, also increasing the power useage of the processor. This boils down to all Mobile Barton processors being multiplier unlocked, no exceptions.
The second reason these chips are such popular overclockers is the low stock voltage that Mobile processors use. A low stock voltage means a high overclocking potential – if a processor (in this case, Mobile Bartons) can handle its stock speed stably with a lower voltage than other’s of its kind (in this case, Desktop Bartons), then it is very likely it will be able to handle higher (overclocked) speeds at a lower voltage than other’s of its kind, as well. The Mobile Barton processor uses a stock Vcore voltage of 1.45V – an incredible 0.2V lower than the 1.65V stock Vcore voltage of the Desktop Barton 2500+. As you can see below, stable results exceeding 2600 MHz on moderate air cooling are not rare with these processors, while using relatively low Vcore voltages.
Why do these chips use such a low stock voltage? They are intended for use in laptop computers, where power consumption and battery life is a major marketing concern.
To sum the Mobile Barton up, it could be said that AMD has essentially picked the cream of the Barton crop, the chips which can run stably with a sub-stock Vcore voltage, and then unlocked them for us through the laptop PowerNow! feature – unintentioanlly creating the ideal overclockers chip. The overclocking results are what you see before, and below, you
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WHAT’S THIS THREAD ALL ABOUT?
The purpose of this thread is to list, and organize, Mobile Barton results by stepping, and batch week, as well as educate and make easily-available the known information about these particularly fascinating processors.
If you have a Mobile Barton processor of any of the stock speed ratings, feel free to share your results with us. I’ll also add them to the below database, and update as often as I can.
Please don’t forget to post the voltages you used to get your overclock, as well as your full stepping, and stepping batch week.
BASIC MOBILE BARTON FACTS
~ All Mobile Barton chips are multiplier unlocked, and you can change the multiplier in your BIOS, or via external means.
~ Mobile Barton processors will work in any motherboard with support for Desktop Bartons.
~ Mobile Barton Processors use a stock Vcore of 1.45V, and have a stock FSB of 133 MHz (266 MHz DDR).
~ Mobile Bartons have the full Barton L2 cache enabled, all 512K of it.
~ Pricing is roughly $20 more than a Desktop Barton from most retailers
~ Mobile Bartons are essentially normal Bartons, except that they are multiplier unlocked, have a very low stock Vcore, and are PowerNow! ready by default.
~ Mobile Bartons have been found to be able to handle high FSB speeds, with good RAM and a good FSB overclocking motherboard. They do not seem to differ in this respect from normal Desktop Bartons.
~ Mobile Bartons can be socket pin-modded, and do not seem to differ from normal Desktop Bartons in this respect.
~ The L12 bridge/pin modification has helped some ABIT NF7-S users with their overclocking, and done nothing for others. Keep in mind that these mobile chips are 133 MHz FSB processors at stock, and should theoretically react the same way 133 MHz FSB Thoroughbreds do to the L12 mod. If you L12 mod your chip, please share your results with us.
~ The chips are currently known to exist in three speeds, 2400+, 2500+, and 2600+. A 2800+ chip is rumoured to be on the horizon, and may actually have been released recently. More updates will follow.
~ Most of the results below are from chips which were purchased from newegg.com .
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MOBILE BARTON STEPPING BREAKDOWN
HERE is a handy guide to AMD’s Processor Specification (OPN) steppings.
FQQ4C is the Processor Specification stepping (OPN) of the Mobile Barton processors.
F – OPGA packaging type
Q – 1.45V stock Vcore voltage
Q – 100 Degree Celcius Maximum recommended operating temperature
4 – 512 Kb L2 cache size
C – 133 Mhz (266 MHz DDR) stock FSB speed
RELATED ARTICLES
~ March 2003 news report from informationweek.com – click HERE
~ February 2004 review from techreport.com – click HERE
~ A very informative, and interesting article about PowerNow!, desktop to mobile conversion, and much more. A must read – click HERE
If you know of a good Mobile Athlon information article, feel free to post a link – I’ll add them here
STEPPINGS AND RESULTS
MOBILE BARTON STEPPINGS AND RESULTS
PLEASE TRY AND TEST YOUR OVERCLOCK FOR STABILITY USING PRIME95 AND 3DMARK2K1 – AN UNSTABLE OVERCLOCK IS NO GOOD TO ANYONE; LEAST OF ALL YOU!
I would like to thank Rabbi, and UNhooked from the AMDMB forums for allowing me to add the results from their similar Mobile 2400+/2500+ thread to this list as well – good work guys! Their thread on the AMDMB forums can be found HERE.
LIST OF REPORTED MOBILE BARTON 2500+ STEPPINGS
(XXXX = unreported)
IQYHA 0407 VPMW (9)
IQYHA 0402 VPMW (1)
IQYHA 0352 MPMW (
AQXEA 0350 XXXX (1)
IQZFA 0349 RPMW (
IQYFA 0349 XPEW (5)
IQXFA 0348 MPMW (1)
IQXFA 0348 XPMW (3)
IQFXA 0348 XPMW (6)
IQYFA 0343 MPMW (1
AQYFA 0343 MPMW (1)
AQZFA 0340 VPMW (1)
AQZFA 0340 VPAW (1)
AQXEA 0335 XXXX (1)
AQXFA 0335 XXXX (1)
UNKNOWN (CHIP INSTALLED) (1)
————–
MOBILE BARTON 2500+ REPORTED RESULTS LIST
(A * marking means Prime95 stability has been reported)
———————
IQYHA 0407 VPMW
* 2530 MHz at 1.725 volts. Idle 35C
* 2310 MHz at 1.55 volts
—–
IQYHA 0407 VPMW
(FatesWarning)
* 2508 MHz at 1.8 volts
IQYHA 0407 VPMW
(Air, Hughhefnar) (Thermalright SP-97, 92mm Tornado)
2531 MHz @ 1.8 volts
2600 MHz @ 1.9 volts
2725 Mhz, 46.5C load
—–
IQYHA 0407 VPMW
(Water, mata2974)
(Koolance system, Swiftech MCW 5002, Mag5, two heatercores)
2802 MHz at 2.05 volts
—–
IQYHA 0407 VPMW
(Air, thegame) (SP-97, 80mm Vantec Tornado)
2640 MHz
—–
IQYHA 0407 VPMW
(Water, madsam) (DTEK TC-4, Chevvy core, Eheim 1250)
* 2750 MHz at 2.05 volts
—–
IQYHA 0407 VPMW
(-=Ambush=-)
No detailed results yet
—–
IQYHA 0407 VPMW
(Water, Dirtybird80) (RBX block, BIX radiator)
No detailed results yet
—–
IQYHA 0407 VPMW
(Air, Tazman2) (SLK 900A, 92mm Tornado)
2600 Mhz at 1.85 volts
—–
IQYHA 0407 VPMW
(Air, fishtanke) (thermalright SP-97, 92mm Panaflo H1A)
* 2675 MHz at 1.9 volts
* 2714 MHz at 1.95 volts
—–
IQYHA 0402 VPMW
(Air, madsam) (SLK 800A, Tornado)
* 2525 MHz at 1.95 volts
—–
IQYHA 0352 MPMW
(Air, sauria) (2 chips, results of one below) (SLK 800A, Tt SF II)
* 2600 Mhz at 1.8 volts
* 2534 Mhz at 1.825 volts
—–
IQYHA 0352 MPMW
(Strages)
* 2200 Mhz at 1.5 volts, 34C load
—–
IQYHA 0352 MPMW
(jonspd)
2558 MHz at 1.75 volts, 42C load
IQYHA 0352 MPMW
(Air, namgorf) (Thermalright SK7, Tt SF II) (2 chips)
Chip # 1
* 2508 MHz at 1.85 volts
Chip # 2
* 2500 MHz at 1.8 volts
—–
IQYHA 0352 MPMW
(IR1)
2420 MHz at 1.7 volts, 40C load
* 2556 MHz at 1.8 volts, 47C load
2620 MHz at 1.8 volts, 42C load
—–
IQYHA 0352 MPMW
(Water, JerMe) (Chevvy core, White Water, Mag 3)
2713 MHz
—–
AQXEA 0350 XXXX
(RW2112)
2288MHz at 1.75 volts
—–
IQZFA 0349 RPMW
(login211)
* 2500 Mhz at 1.85 volts
* 2598 Mhz at 2.0 volts
—–
IQZFA 0349 RPMW
(caRpetbomBer)
2200 MHz at 1.5 volts
2400 MHz at 1.8 volts
—–
IQZFA 0349 RPMW
(OTMOPO3OK)
2730 at 2.0 volts, 49C load
* 2680 MHz at 1.89 volts
—–
IQZFA 0349 RPMW
(Captain Hilts)
2500 MHz at 1.89 volts, 58C load
—–
IQZFA 0349 RPMW
(Air, CHiN0)
2200MHz at 1.6 volts
—–
IQZFA 0349 RPMW
(Air, meatneck) (Vantec Aeroflow, TMD fan)
* 2478 MHz at 1.75 volts
—–
IQZFA 0349 RPMW
(Air, musk) (SLK 900U)
2200 MHz at 1.55 volts
—–
IQZFA 0349 RPMW
(Water, Hydr0 styles)
* 2500 MHz at 1.9 volts, 38C load
—–
IQYFA 0349 XPEW
(Water, UNhooked)
2387MHz at 1.8 volts
* 2550 MHz at 2.0 volts
—–
IQYFA 0349 XPEW
(Air, Raybo)
* 2507MHz at 1.9 volts
—–
IQYFA 0349 XPEW
(Air, BaoPee) (Thermalright SLK 900 Air)
2500 MHz at 1.95 volts
—–
IQYFA 0349 XPEW
(Air, thewanted_) (Thermalright SLK 800, Tt SFII)
2300 MHz at 1.775 volts (Heat Issues)
*
>2500 Mhz at 1.93 volts
—–
IQYFA 0349 XPEW
(Water, ChillPhatCat) (Mag3, Maze 4, Caprice core)
2662.5 MHz at 2.025 volts. Idle 39C, Load 46C
~1.9GHz at 1.4 volts
~2.0GHz at 1.5 volts
~2.2GHz at 1.6 volts
~2.3GHz at 1.7 volts
~2.5GHz at 1.9 volts
~2.65GHz at 2.0 volts
2724 MHz at 2.05 Volts (New PSU)
* 2500 Mhz at 1.9 volts
—–
IQXFA 0348 XPMW
(Water, fLiPaChu)
2000MHz at 1.45v
2310MHz at 1.65v
—–
IQXFA 0348 XPMW
(kurty)
Cannot clear 2300 MHz (serious PSU voltage issues)
2000 MHz at 2 volts (serious PSU voltage issues)
—–
IQXFA 0348 XPMW
(Air, Turd Furguson) (SLK 900, Delta fan)
2200 MHz at 1.55 volts
2500 MHz at 1.95
—–
IQXFA 0348 XPMW
(Water, Ad Rock) (Swiftech Watercooling)
2525 MHz
—–
IQXFA 0348 MPMW
(Water, felinusz) (Cascade Block, Dual BIX, Chevvy heatercore, CSL T1 pump)
Still assembing the water circuit
—–
IQFXA 0348 XPMW
(Water, PotatoMAN) (Whitewater, Dual 120mm core)
2568 MHz at 1.825 volts
2700 MHz at 2.2 volts
—–
IQFXA 0348 XPMW
(goldie)
No detailed results
—–
IQFXA 0348 XPMW
(Air, Posidon42) (Thermalright SK7, Tt SFII)
* 1.836 MHz at 1.35 volts
2200 MHz at 1.55 volts
* 2500 MHz at 1.95 volts
—–
IQFXA 0348 XPMW
(caboob)
No detailed results
—–
IQFXA 0348 XPMW
(sixshot666)
2400 MHz at 1.75 volts
—–
IQFXA 0348 XPMW
(Air, blkgti) (Thermalright SP-97, 92mm Panaflo U1A)
Chip sold on forum classifieds
—–
IQYFA 0343 MPMW
(Air, mister694)
2200MHz at 1.575 volts
* 2404MHz at 1.75 volts. 44C idle, 50C load
2530MHz at 1.75 volts
—–
IQYFA 0343 MPMW
(Air, farfromuman)
2500MHz at 1.84 volts
—–
IQYFA 0343 MPMW
(Water, DipStickTony) (Chevvy core, Neomoses Nemesis)
Before burn in:
* 2708 MHz at 1.8 volts. Load 45C
* 2750 MHz at 1.85 volts
2.1 volts on NF7-S will not boot into Windows at 2.8 ghz
After burn in:
* 2700 MHz at 1.65 volts (1.7 in the BIOS, board undervolts Vcore). Load 41C
* 2800 MHz at 1.875 volts (1.95 in the BIOS, board undervolts Vcore). Load ~46C
2950 MHz at 1.95-2.03 volts (2.2 in the BIOS, board undervolts/fluctuates Vcore).
2950 MHz Runs Prime95 Priority Ten for one hour, then crashes.
—–
IQYFA 0343 MPMW
(Air, Water, Molester) (Swiftech Air, White Water, Chevvy Core)
Air:
2712 MHz boots at 2.0 volts
* 2616 MHz at 2.0 volts
* 2652 MHz at 1.97 volts
* 2640 MHz at 1.97 volts, 54C load
(Motherboard fluctuates, and undervolts Vcore)
Water:
* 2678 MHz at 2.03 volts (1.95 actual, board fluctuates Vcore)
—–
IQYFA 0343 MPMW
(Air, Drozdov) (SLK 800A, 92mm tornado)
2630 MHz at 1.9 volts, 44C load
IQYFA 0343 MPMW
(kepten)
* 2841 MHz at 2 volts
—–
IQYFA 0343 MPMW
(Air, Water {PMS}Fishy) (Thermalright SK6, Custom Winflex Waterblock)
Air:
2600 MHz at 1.725 volts.
Water:
2866 MHz at 1.95 volts (2.03 in BIOS, board undervolts), 38C load
More details: HERE
—–
IQYFA 0343 MPMW
(youthemandan)
* 2631 MHz at 1.8 volts
—–
IQYFA 0343 MPMW
(Water, jlin453) (TC4, Chevvy core, Maxijet 1000, really cool custom rez)
* 2740 MHz at 2.0 volts
—–
IQYFA 0343 MPMW
(Water, craneage2001) (RBX, Mag3, Chevvy core)
* 2415 MHz at 1.65 volts.
2700 MHz at 1.9 volts (primes for a half hour)
—–
IQYFA 0343 MPMW
(Prometia, Cow2kie)
* 2760 MHz at ??? volts (preliminary testing with new prommie)
* 2810 MHz at 1.95 volts
2946 MHz Windows screenshot at 2 volts
—–
IQYFA 0343 MPMW
(WinXP)
* 2700 Mhz at 1.95 volts
* 2630 MHz at 1.8 volts
—–
IQYFA 0343 MPMW
(Drozdov)
* 2630 MHz at 1.9 volts
—–
IQYFA 0343 MPMW
(Prometia, _TRONIK_)
* 2421 MHz at 2 volts, 48C load (Air cooling)
—–
IQYFA 0343 MPMW
(Itshondo)
2700 MHz at 2.0 volts, 46C idle
* 2609 at 1.95 volts
—–
IQYFA 0343 MPMW
(Water, Milkman) (White Water, DTEK Procore, Via 1300)
* 2740 MHz at 1.9 volts.
2800 MHz is chip best (so far)
—–
IQYFA 0343 MPMW
(Air, Hellfire) (Thermalright SP-97, 92mm Tornado)
* 2809 MHz at 1.93 volts. Idle 43C, Load 48C.
—–
IQYFA 0343 MPMW
(iLestOne)
* 2595 Mhz at 1.85 volts
—–
AQYFA 0343 MPMW
(Matt Coz
)
No detailed results yet
—–
AQZFA 0340 VPAW
(Air, M4D) (Thermalright SP-97, Tt SF II)
* 2200 MHz at 1.5 volts
2400 MHz at 1.65 volts
2600 MHz at 1.95 volts
—–
AQZFA 0340 VPMW
(Violator)
* 2400 Mhz at 1.725 volts
—–
AQXEA 0335 MPMW
(Air, blkgti) (Thermalright SP-97, 92mm Panaflo U1A)
* 2400 MHz at 1.825 volts
—–
AQXFA 0335 XXXX
(Water / Phase-Change, c3ll)
2415MHz
—–
STEPPING UNKNOWN (CHIP INSTALLED)
(Water, Ruiner) (Cascade Watercooled)
* 2385 MHz at 1.9 volts
—–
LIST OF REPORTED MOBILE BARTON 2400+ STEPPINGS
IQYHA 0402 TPMW (2)
IQYHA 0350 MPMW (2)
IQZFA 0348 TPMW (2)
IQZFA 0347 XPMY (1)
IQYHA 0346 MPM (3)
AQZFA 0344 SPMW (1)
AQYFA 0343 WPFW (1)
AQYFA 0343 WPMW (1)
AGYFA 0343 MPMW (1)
AQYFA 0343 MPM (1)
AQYFA 0343 WPMW (2)
IQYHA 0343 MPM (1)
AQXEA 0323 MPMW (3)
————–
MOBILE BARTON 2400+ REPORTED RESULTS LIST
(A * marking means Prime95 stability has been reported)
———————
IQYHA 0402 TPMW
(Air, RedDawg41) (2 chips, results of one below)
(SLK 900U, Vantec Tornado)
2663 MHz at 1.97 volts
—–
IQYHA 0350 MPMW
(Water, ChillPhatCat) (Mag3, Maze 4, Caprice core)
* 2630 MHz at 1.925 volts. 38C load, 30C idle
2500 MHz at 1.75 volts
—–
IQYHA 0350 MPMW
(Air, Richard) (Silent Tt Air)
* 2357 MHz at 1.75 volts, 56C load.
IQZFA 0348 TPMW
(Air, SlicedBread)
2400MHz at 1.7 volts
—–
IQZFA 0348 TPMW
(Air, Rancherlee)
2172MHz at 1.6 volts
—–
IQZFA 0347 XPMY
(Air, djspl)
* 2355MHz at 1.75 volts. 48C idle, 50C load
* 2400MHz at 1.825 volts. 55C Load
—–
IQYHA 0346 MPM
(Air, hudson_hawk)
2219MHz at 1.5 volts. 41C Load
2240MHz at 1.6 volts. 43C Load
—–
IQYHA 0346 MPM
(Air, Evil_Spork)
10.5×252 = 2652MHz , 2.0v
11×243 = 2679MHz , 2.0v
—–
IQYHA 0346 MPM
(Water, Aldamon) (TC-4, Chevvy Core, Via 1300, Custom Rez)
* 2510 MHz at 1.85 Vcore
—–
AQZFA 0344 SPMW
(Air, NvMatrix)
2200MHz at 1.55 volts. 28C idle, 34C load
2300MHz at 1.6 volts. 31C idle, 36C load
2400MHz at 1.7 volts. 35C idle, 39C load
2500MHz at 1.8 volts. 39C idle, 48.5C load
2600MHz at 1.97 volts. 45.5C idle, 53.5C load
2700MHz at 2.23 volts, doesn’t load windows
* 2480MHz at 1.9 volts. 40C idle, 52C load
—–
AQYFA 0343 WPFW
(Air, hitechjb1) (Thermalright SP-97, 80mm Tornado)
* 2700 Mhz at 2.2 volts
—–
AQYFA 0343 MPM
(Air, Penti) (Thermalright CB-7, 80mm fan)
* 2305 Mhz at 1.8 volts
—–
AQYFA 0343 WPMW
(treepop)
2420 MHz at 1.75 volts
2530 MHz at 1.9 volts
2640 MHz at 2.05 volts
—–
AGYFA 0343 MPMW
(Air, Nate)
2400MHz
—–
AQYFA 0343 WPMW
(OSUmaxx)
* 2500 MHz at 1.825 volts
* 2600 Mhz at 1.95 volts
AQYFA 0343 WPMW
(Air, patrikser) (SLK 700)
* 2400 Mhz at 1.75 volts
—–
IQYHA 0343 MPM
(Water, Vengance_01) (White Water, Caprice Core, Quite One Pump)
* 2500 MHz at 1.875 volts
* 2570 MHz at 2 volts
* 2650 MHz at 2 volts
—–
AQXEA 0323 MPMW
(Air, cartmanea)
* 2000MHz at 1.55 volts
* 2200MHz at 1.65 volts
* 2400MHz at 1.93 volts
* 2300MHz at 1.825 volts
—–
AQXEA 0323 MPMW
(Rocko)
2100MHz at 1.5 volts
—–
AQXEA 0323 MPMW
(Air, j_lost)
2600MHz at 2.0 volts
—–
LIST OF REPORTED MOBILE BARTON 2600+ STEPPINGS
IQYHA 0401 UPMW (4)
IQYHA 0348 SPMW (1)
IQYHA 0346 TPMW (3)
————–
MOBILE BARTON 2600+ REPORTED RESULTS LIST
(A * marking means Prime95 stability has been reported)
———————
IQYHA 0401 UPMW
(Water, badge51) (Corsair Hydrocool) (2 chips)
Chip # 1
* 2670 MHz at 2.0 volts, 41C load
Psts 2800 Mhz
Chip # 2
* 2600 MHz at 2.0 volts
posts 2800 Mhz
—–
IQYHA 0401 UPMW
(Water, crimedog) (RBX, Mag 3)
2683 MHz at 1.85 volts
—–
IQYHA 0401 UPMW
(frodoski)
No detailed results yet
—–
IQYHA 0348 SPMW
(Timzak)
* 2410 Mhz at 1.675 volts, 46C load
* 2510 Mhz at
1.8 volts, 52C load
2600 MHz at 1.9 volts
—–
IQYHA 0346 TPMW
(Rabbi)
* 2200 MHz at 1.5 volts
* 2300 MHz at 1.55 volts
* 2400 MHz at 1.675 volts
—–
IQYHA 0346 TPMW
(Water, d4mon) (Koolance EXOS-AL)
2500 MHz at 1.76 volts, 44C load
2615 MHz at 1.9 volts, 52C load
—–
IQYHA 0346 TPMW
(Air, blkgti) (Thermalright SP-97, 92mm Panaflo U1A)
* 2600 MHz at 1.79 volts (board undervolts Vcore), 45C load
—–
IQYHA 0346 TPMW
(Air, marc999) (Thermalright SP-97, 80mm PAnaflo L1A)
* 2400 MHz at 1.625 volts
2500 MHz at 1.7 volts