C2Q Q6600 "GO Stepping" now available at OcUK!

IceShock · 19 Jul 2007 at 23:07

Gerard said:
3c, pfft The way people were talking was like it was gonna be something substantial like 10-15c or so.

i kind of thaught that untill i only saw it was 10w of difference..

but you have to think about the fact that quad cores are heat beasts, so the 10w less might alow you to b able to cool it on air and overclock that bit more

fornowagain · 19 Jul 2007 at 23:17

Its not 10W, its only 10W at stock voltages and 2.4Ghz with a load somewhere short of 100%. As soon as you overclock the TDP is meaningless. With the lower TDP and hopefully a lower vcore for the same clocks. Then as I said, the sums say maybe 30W is possible. If anyone knows their systems thermal resistance then its easy enough to work out what they're likely to see temps wise.

The Asgard · 19 Jul 2007 at 23:30

It all assumes that the B3 runs at stock volts.

My X3210 runs 3G at 1.25 volts while my other B3 Q6600 runs 3G @ 1.35 volts. Not sure how dropping .1 of a volt equates to watts at 3G's?

fornowagain · 19 Jul 2007 at 23:54

The Asgard said:
It all assumes that the B3 runs at stock volts.

My X3210 runs 3G at 1.25 volts while my other B3 Q6600 runs 3G @ 1.35 volts. Not sure how dropping .1 of a volt equates to watts at 3G's?

That I can answer, with a TDP=105W and 3Ghz, dropping 0.1v is 22w.

For reference, I've posted this derivation before. Its simplified but works well enough.

A commonly used expression is for power P, P=kLV²F

Where:
L = Load (from software)
V = Core voltage
F = Chip frequency
k = Empirical constant for the chip.
Pd = Total cpu power
TDP = Thermal Design Power

Therefore delta P, i.e. change in power. The constants cancel.

Pd = TDP x (F2/F1) x (V2/V1)²

Or a little easier to understand

OCed Watts = TDP x (OCed Mhz / Default Mhz) x (OCed Vcore / Default Vcore)²

For temps

TR = RCS + RSA = (Tc - Ta)/Pd

Where:
TR = Total Thermal Resistance (constant)
Tc = Tcase, cpu case temperature
Ta = Chassis ambient temperature
Pd = Total cpu power dissipation
RCS = Thermal resistance, case-to-sink
RSA = Thermal resistance, sink-to-ambient

Therefore:

Tc = (TR x Pd) + Ta

melbourne720 · 20 Jul 2007 at 07:52

fornowagain said:
Wow, 10w TDP resolves all that, amazing.

lol, I get your point, but quad cores do produce more heat. Anything that reduces that amount of heat is a good thing. If you don't think it is going to make much difference, then get the regular version.

IMHO, I think Intel saw the way temperatures were going with quads and decided that they should have cooler running chips at stock. Hence the G0 stepping.

There are numerous (dual core) examples of G0 stepping running cooler than what you would expect, I'll have a look for one.

easyrider · 20 Jul 2007 at 08:47

Alex UK said:
No, obviously not. My point is that know one really knows how much of a difference this is going to make. The difference between this and the regular Q6600 could be minimal, or it could be huge. Therefore, I will reserve judgement on this 'GO Stepping' until it becomes apparent how much of a difference it has made.

Do some research...

Its all out there :rolleyes:

marscay · 20 Jul 2007 at 09:44

melbourne720 said:
There are numerous (dual core) examples of G0 stepping running cooler than what you would expect, I'll have a look for one.

there's a definite problem with the temperature readings on the G0 chips, no-one really knows how much cooler they are just yet.

sub ambient just isn't possible

apart from that the o/c results over at XS are terrible on anything but the 6850, if the Quads take the same route i don't like the chances of GO Q6600 being nice clockers.....speed binning for-the-win ....we'll see

personally i wouldn't be jumping on a pre-order until there's a few samples out in retail, if i had to take a punt the G0 quads will be crap clockers.

oggmonster · 21 Jul 2007 at 11:35

marscay said:
personally i wouldn't be jumping on a pre-order until there's a few samples out in retail, if i had to take a punt the G0 quads will be crap clockers.

Even if they are bad clockers surely they will be better than the b3 quads?

stickroad · 21 Jul 2007 at 12:40

oggmonster said:
Even if they are bad clockers surely they will be better than the b3 quads?

Yes they will be but by how much is another question.

wuyanxu · 21 Jul 2007 at 13:38

stickroad said:
Yes they will be but by how much is another question.

as long as they q6600 G0 stepping can reach 3Ghz on a Zalman 9500, im happy.

Bobmunkhouse · 22 Jul 2007 at 11:27

Is there any idea of when these are coming into stock has I have all the money ready and I have chosen all the other parts and its getting really hard to resist pressing the buy now button....... :confused:

oggmonster · 22 Jul 2007 at 11:34

Bobmunkhouse said:
Is there any idea of when these are coming into stock has I have all the money ready and I have chosen all the other parts and its getting really hard to resist pressing the buy now button.......

Nobody knows i'm afraid. As soon as the G0s are in stock my £1.3k order will be placed

SS-89 · 22 Jul 2007 at 11:35

Ive seen some very good clocks on B3 q6600s...

oggmonster · 22 Jul 2007 at 11:40

SS-89 said:
Ive seen some very good clocks on B3 q6600s...

Yeah but sometimes the temps are stupidly high even on a Thermalright Ultra Extreme. I would be clocking mine to 3.2ghz (400x8) and anything that helps keep those temps down is a godsend!

easyrider · 22 Jul 2007 at 12:21

oggmonster said:
Nobody knows i'm afraid. As soon as the G0s are in stock my £1.3k order will be placed

what are you buying?

Nelly · 22 Jul 2007 at 13:50

WTF? Q6600 G0 steppings paying a premium? not that it bothers me personally but I bet other retailers wont be doing that!

oggmonster · 22 Jul 2007 at 15:39

Nelly said:
WTF? Q6600 G0 steppings paying a premium? not that it bothers me personally but I bet other retailers wont be doing that!

But other retailers cant guarantee the G0 stepping..

helmutcheese · 22 Jul 2007 at 15:47

Spending 1.3K now may not be best idea if you can hang out a few months, the new tech is due from both camps, your still buying tech about 1+ years old for Intel now, the increase in FSB is not a new tech.

I wish I waited till Sep/Oct

oggmonster · 22 Jul 2007 at 15:49

helmutcheese said:
Spending 1.3K now may not be best idea if you can hang out a few months, the new tech is due from both camps, your still buying tech about 1+ years old for Intel now, the increase in FSB is not a new tech.

I wish I waited till Sep/Oct

Remember this a complete new build...ie new case, new monitor etc. Plus theres always new stuff comming out! If you had waited untill sep/oct you would be wishing you waited untill Jan/Feb...and it goes on and on and on

mdjmcnally · 22 Jul 2007 at 15:58

Nelly said:
WTF? Q6600 G0 steppings paying a premium? not that it bothers me personally but I bet other retailers wont be doing that!

If you want a gauranteed G0 stepping then overclockers have to check them manually. £10 for that isn't unreasonable.

A lot of other retailers will get you a "whats a CPU stepping" response.

You makes your choice and pays your money, of course you can wait a couple of months to ensure the old stock sold out and that the regular shipments are G0 anyway