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Overclocking

Enthusiast P55: Eight LGA 1156 Boards Between $150 And $200
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Every product in today’s comparison provides wide enough frequency and timing selections to push our big air cooler to the limit, even with an ambient temperature below 22 degrees Celsius.

BIOS Frequency and Voltage settings (for overclocking)

 

ASRock
P55 Deluxe

Asus
P7P55D EVO

Biostar
TPower I55

EVGA
P55 SLI

CPU Base Clock

100-300 MHz (1 MHz)

80-500 MHz (1 MHz)

100-800 MHz (1 MHz)

133-600 MHz (1 MHz)

CPU Multiplier

Yes

Yes

Yes

Yes

DRAM Data Rates

BCLK x6 - x12 (x2)

BCLK x6 - x12 (x2)

BCLK x6 - x12 (x2)

BCLK x6 - x12 (x2)

PCIe Clock

50-150 MHz (1 MHz)

100-200 MHz (1 MHz)

100-150 MHz (1 MHz)

100-200 MHz (1 MHz)

CPU Vcore

0.84-2.00V (6.25mV)

1.10-1.70V (6.25mV)

+7875mV (6.25mV)

+630mV (10mV)

Uncore Voltage

1.11-2.04V (14.5mV)

1.10-1.70V (6.25mV)

1.10-2.03V (15mV)

+630mV (10mV)

PCH Core

1.07-1.49V (6.5mV)

1.05V, 1.15V

1.10-2.03V (15mV)

+300mV (10mV)

DRAM Voltage

1.56-2.01V (14mV)

1.20-2.50V (12.5mV)

1.60-2.53V (15mV)

+630mV (10mV)

CAS Latency

6-11 Cycles

3-11 Cycles

3-15 Cycles

3-15 Cycles

tRCD

3-15 Cycles

3-15 Cycles

3-15 Cycles

3-15 Cycles

tRP

3-15 Cycles

3-15 Cycles

3-15 Cycles

3-15 Cycles

tRAS

9-31 Cycles

3-31 Cycles

9-63 Cycles

9-63 Cycles

BIOS Frequency and Voltage settings (for overclocking)

 

Foxconn Inferno
Katana GTI

Jetway
HI05

Gigabyte
P55-UD4P

MSI
P55-GD65

CPU Base Clock

66-255 MHz (1 MHz)

133-500 MHz (1 MHz)

100-1200 MHz (1 MHz)

100-600 MHz (1 MHz)

CPU Multiplier

Yes

Yes

Yes

Yes

DRAM Data Rates

BCLK x6 - x12 (x2)

BCLK x6 - x12 (x2)

BCLK x6 - x12 (x2)

BCLK x6 - x12 (x2)

PCIe Clock

100-120 MHz (1 MHz)

100-200 MHz (1 MHz)

90-150 MHz (1 MHz)

90-190 MHz (1 MHz)

CPU Vcore

-0.40-+1.26V (10mV)

-0.88-+8.00V (25mV)

0.50-1.90V (6.25mV)

0.87-2.70 (6.25mV)

Uncore Voltage

0.95-1.50V (10mV)

1.12-2.23V (17.5mV)

1.05-1.99V (20mV)

0.45-2.02V (5.38mV)

PCH Core

0.95-1.50V (10mV)

1.08-2.14V (17mV)

0.95-2.00V (20mV)

1.00-2.40V (10mV)

DRAM Voltage

1.40-2.71V (10mV)

1.54-3.26V (25.5mV)

1.30-2.60V (20mV)

0.91-2.40V (6.25mV)

CAS Latency

3-15 Cycles

3-15 Cycles

6-15 Cycles

4-15 Cycles

tRCD

3-15 Cycles

3-15 Cycles

1-15 Cycles

3-15 Cycles

tRP

3-15 Cycles

3-15 Cycles

1-15 Cycles

3-15 Cycles

tRAS

9-63 Cycles

9-63 Cycles

1-31 Cycles

9-31 Cycles


However, not every setting is completely useful. Surely, most overclockers understand that base clock limits beyond 300 MHz are completely meaningless with the LGA 1156 platform, and not every board could fully support even our moderate 1.45V CPU core setting.

Biostar has put a lot of effort into its overclocking campaign, and that has paid off with a CPU overclocking win. Also notice the asterisk next to ASRock’s entry--this particular model wasn’t stable at 1.45V CPU core when maximum overclocks and eight Prime95 threads were applied. We found the highest practical setting for the P55 Deluxe was 1.40V, as anything higher would cause the motherboard’s over-current protection to reset the system under full load. We’re sure someone will try to prove us wrong by testing higher voltage levels with lower loads or clock speeds, but the only practical way we know to honestly increase the board’s amperage capacity is to increase VRM cooling.

Gigabyte takes a big lead over rival Asus and overclock-leader Biostar for maximum base clock, a setting that should be extremely important to multiplier-limited Core i5 owners.

Foxconn has the highest average memory overclock, while EVGA leads with two modules and Gigabyte leads when four are installed.

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  • -4 Hide
    enzo matrix , November 11, 2009 5:07 AM
    interesting
  • 3 Hide
    skora , November 11, 2009 5:25 AM
    There's two market segments. Once you get the features you need, there's overclockers, and stock users. I've never seen a mobo recommended based on its application performance and all thats looked at is how well it OCs. Hopefully, people read the article and don't just go buying biostar expecting the regular quality of gigabyte or asus though the asus is a little overpriced here for my taste. That $25 can go towards a better GPU, but I'm a gamer.
  • 2 Hide
    Crashman , November 11, 2009 5:50 AM
    enzo matrixinteresting


    Gigabyte had some additional interesting news about the new P55A-UD4P, where the addition of the letter "A" supposedly means "Advanced" and refers to the addition of SATA 6.0 Gb/s and USB 3.0 controllers. Unfortunately, it wasn't ready when the comparison was written. The "A" also cost slightly more.
  • 5 Hide
    ibnsina , November 11, 2009 9:04 AM
    For $15 more is best to go for the newly released Giga-byte GA-P55A-UD4P, the extra’s you get are:-

    2 x USB 3.0
    2 x SATA 6Gb/s.

    $184.99 on newegg.
  • 1 Hide
    Crashman , November 11, 2009 9:43 AM
    ibnsinaFor $15 more is best to go for the newly released Giga-byte GA-P55A-UD4P, the extra’s you get are:-2 x USB 3.0 2 x SATA 6Gb/s.$184.99 on newegg.


    $15 for all that sounds great, unless those features are useless to you. SATA 6.0 Gb/s will remain completely useless until long after the board is outdated, and USB 3.0 is nothing more than an eSATA substitute at the moment.
  • 3 Hide
    apache_lives , November 11, 2009 10:40 AM
    Why do we bitch about IDE and FDD connectors? If your using windows xp and IDE hdd/dvd drives your should be ashamed, and even then you can get USB floppys etc, and if you are using those fittings you are not getting the true performance out of your modern system, and IDE also makes boot times longer thanks to detection and legacy delays - cudos to those who ditch those ports in an effort to modernise modern systems, and to those who keep them - its like adding ISA ports to the board - times up.
  • 4 Hide
    cahl , November 11, 2009 10:55 AM
    The new P55A-UD4P has better power phasing, 12+2 vs 8+2 on the old gigabyte UD4P, and probably more stuff aswell, like the LOTES socket, well worth the extra $15 to me.
  • 5 Hide
    bigballinggpr , November 11, 2009 11:14 AM
    You don't bring up MSI's board at all in the conclusion. . . i'm a little curious as to what your final thoughts are on it.
  • -3 Hide
    Crashman , November 11, 2009 12:26 PM
    apache_livesWhy do we bitch about IDE and FDD connectors? If your using windows xp and IDE hdd/dvd drives your should be ashamed, and even then you can get USB floppys etc, and if you are using those fittings you are not getting the true performance out of your modern system, and IDE also makes boot times longer thanks to detection and legacy delays - cudos to those who ditch those ports in an effort to modernise modern systems, and to those who keep them - its like adding ISA ports to the board - times up.


    You mean complain? Like you're complaining right now? It's all a matter of logic: There are probably more Windows XP users carrying over their old OS into a new build than there are Ultra ATA users carrying over their ancient hard drives. Therefor, the floppy interface, as outdated as it is, is more useful than the Ultra ATA interface.

    The problem as described is that you PAY for an Ultra ATA controller. Why bother? Even if you're an XP devotee you probably don't WANT to pay for an Ultra ATA connector.

    But for most motherboards, the floppy interface is free. It doesn't slow down boot times or performance either, if you don't need it you can ignore it.

    Well, maybe you can't ignore it, but a logic dictates over emotion in reviews.

    THG has no reason to love or hate the floppy connector, no stake in the legacy OS game, but anyone reader who wants to play the hater deserves to be called out for it. As for the manufacturers, honest reporting is Tom's Hardware's goal. Personally, I like the fact that some manufacturers provide legacy features and others don't, both types of products work well.
  • 3 Hide
    doomtomb , November 11, 2009 1:36 PM
    Quote:
    with only a single PS/2 port left behind to support the older mice occasionally preferred by seasoned gamers


    This is from the page on the EVGA P55 but you can clearly see it is a purple PS/2 port which is for keyboards... lol
  • 3 Hide
    zeuscgp , November 11, 2009 1:56 PM
    Anyone else jump on that $130 Halloween deal on NewEgg for the GD65? :) 
  • -5 Hide
    zeuscgp , November 11, 2009 1:57 PM
    Anyone else jump on that $130 Halloween deal on NewEgg for the GD65? :) 
  • 3 Hide
    gaiden2k7 , November 11, 2009 2:51 PM
    that was the best looking picture for an article on TH this year! how i wished that was a single mobo... cant stop staring at it!
  • -4 Hide
    Anonymous , November 11, 2009 3:00 PM
    I'm a little annoyed that this is a look at enthusiast-level boards, yet they make no comparisons to any X58 boards.

    If I'm considering an enthusiast-level board, I'd like to see what I'm losing (if anything) by saving an extra $100 and going with the cheaper platform.
  • 2 Hide
    Anonymous , November 11, 2009 3:18 PM
    @gaiden2k7:
    I agree. All those multi-colored mobos lined up next to each other are mesmerizing. I'd give you a +1, but I'm anonymous :( 
  • 2 Hide
    terr281 , November 11, 2009 3:20 PM
    Regarding the floppy vs IDE interface debate...

    The solution to the lack of a floppy interface for Win XP raid configuration users is to slipstream the drivers into the Win installation. (Yes, you have to "copy" the Win XP disk, at the cost of a blank CD, and you have to have a functional computer with a burner and the ability to run copy software. But, most builders have this.)

    I, personally, am one of the people that will continue to buy MBs with an IDE connector. Why? I have a very quiet, high quality IDE DVD-Burner that will be carried over into any new system I build from my old system. I rarely used the burner on the currently installed pc, thus it is "like new."

    The same model burner, installed in my mate's computer, will also be moved to that new system. (Thus, IDE required.)

    It is a "cost added" part, and many people don't use it anymore. But, to each their own. (I don't use Firewire, Esata, or more than 4 rear and 1 front USB 2.0 port on any computer. I still have to pay for those.)

    As Crashman said, manufacturers provide different features on their products based upon different consumer wishes.
  • 2 Hide
    Anonymous , November 11, 2009 3:38 PM
    Hmmm, based on Gigabyte's specs page for the GA-P55A-UD4P, SATA3/USB3 capability is lost if you have two video cards:

    "* When dual graphics cards are used in 1st and 2nd PCIex16 slots, SATA3 / USB 3.0 (Marvell 9128 /NEC USB 3.0 Controllers) will work at normal mode."

    http://www.gigabyte.us/Products/Motherboard/Products_Spec.aspx?ClassValue=Motherboard&ProductID=3250&ProductName=GA-P55A-UD4P
  • 1 Hide
    Crashman , November 11, 2009 3:46 PM
    nopointpayingextraHmmm, based on Gigabyte's specs page for the GA-P55A-UD4P, SATA3/USB3 capability is lost if you have two video cards:"* When dual graphics cards are used in 1st and 2nd PCIex16 slots, SATA3 / USB 3.0 (Marvell 9128 /NEC USB 3.0 Controllers) will work at normal mode."http://www.gigabyte.us/Products/Mo [...] -P55A-UD4P


    That sounds like "normal mode" is refering to PCIe x1, which is 250MB/s (2.5 Gb/s).
  • -3 Hide
    Gedoe_ , November 11, 2009 4:10 PM
    paying $150 for a mobo

    haha o wow what a joke. I would spend my money at the CPU or GPU, where it matters.
  • -2 Hide
    Br4v0guy , November 11, 2009 5:56 PM
    Some day, there will be a roundup for uATX mobos for the 1156 platform. Until then.... mehhhhhhhhhhhh.
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