Should I upgrade to q9550

F1shF4t

Golden Member
Oct 18, 2005
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Update:

Anyways I decided to get the q9550. Its a C1 stepping with 1.25 VID.

Have it running at 3.6ghz (425 * 8.5) at 1.2375v linpack stable. At this speed it loads up to 72c using realtemp (Or 77C if coretemp reports the Tjunction correctly as 100 instead of realtemp's 95) This temp will be lower by 5C if I removed the sde panel.

Just going by the magnitudes of the wattage reported in Everest (Apparently the mainboard can report this, probably innacurate but thats why I'm only looking at the % diff) this thing should be about 75 % of my older Q6600 power consumption.

I can also get it stable at 3.83 ghz at 1.3 volts. At these settings it heats up the same as my old q6600 at 3.33ghz. Anyways I decided to use the 3.6 ghz setting cause it cut downs the heat, which is one of the reasons I wanted to change the cpu anyways.


So basically went from a q6600 3.33ghz to probably equivalent speed of 3.8ghz while cutting power use by 20 - 25%.



Original Post:

My current specs are in sig. (Had this quad for a year now)
With the price cutts for intel quads I was thinking of maybe moving to a newer cpu.

I've tested my mainboard and my ddr800 (5-5-5-15) mem, and they are good to 450 fsb lipack and memtest stable. (haven't tested it higher) This makes a q9550 quite nice with a possible speed of ~3.8 ghz. At this fsb the chipset voltage is at stock (1.2v i think) with a 333mhz fsb strap.

Is it correct to assume the q9550 would behave similarly at this fsb if the old q6600 works?

Biggest reason I'm considering the change is to get rid of the heat and the power it consumes. This thing loads up to 86C during linpack with a TRUE in push pull config going straight to the back case fan. Its mounted correctly with custom bolt through kit, which is a LOT tighter than the mounting which came with it originally. Also I guess I want to play with something new :p

Should I expect any significant reduction in heat production from q9550?


Things I do with the comp is encode videos (family videos, moves from old tapes I own ect) and play games. Current ones are GTA4 and Fallout 3.
 

dguy6789

Diamond Member
Dec 9, 2002
8,558
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I am running a Q9550 at 3.4Ghz cooled by a Freezer 7 Pro with a custom bolt through kit and my cpu barely gets to 60C full load in linpack.
 

Denithor

Diamond Member
Apr 11, 2004
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I guess that answers your question about heat/temps.

The Q9550 is known to OC well. There's no guarantee you'll actually hit 3.8GHz but it's certainly possible. And that would make your encoding & games go faster.

But you might want to wait and pick up one of the newer "LP" 65W quads:
Q9400S (2.66GHz, 6MB cache) ~$270
Q9550S (2.83GHz, 12MB cache) ~$370

These have not yet hit the market but will offer an incredible amount of performance while using less power & generating less heat.

I actually calculated the Q9400S would pay for the price difference ($40 over the standard chip) in about 1.5 years of 24/7 use just in power savings.

95W - 65W = 30W savings
30W * 24 hours/day * 365 days/year * 1 kWh/1000 Wh= 263 kWh/year
263 kWh/year * $0.10/kWh = $26.30 annual savings

EDIT: Your payback may be faster/slower depending on your actual energy cost.
 

n7

Elite Member
Jan 4, 2004
21,303
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With the upcoming price cuts in mind, a Q9650 is what i'd look at.

You'll be able to do 4+ GHz easily if you know what you are doing, likely a decent bit more, while still running cooler than your current Q6600.

The lower TDP Q9550 sounds nice if power is really your concern, but you shouldn't be OCing then...

Since the Q9550's 8.5x multiplier makes higher OCs a challenge on your P5Q-D, i'd still look at the Q9650.

I actually might get a Q9650 myself if pricing pans out decently...

 

Denithor

Diamond Member
Apr 11, 2004
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Price cuts are here.

Q9400 $229
Q9550 $281
Q9650 $350

All @ ZZF with free shipping.
 

n7

Elite Member
Jan 4, 2004
21,303
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Ah yes, i forgot that unlike here in Canada, US e-tailers actually adjust prices when there's a drop...
 

F1shF4t

Golden Member
Oct 18, 2005
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I'm in Australia, and those "q9550s" are not even listed in the online shops here and would probably have a high price.
I'm in Brisbane on work training and though I might save the 20 bucks shipping and pick up the chip now. The local shops where I live probably with the pricecuts would be more expencive than original introduction price in online shops :p

I was considering getting a q9650 before but changed my mind after my board and mem did 450 fsb on stock volts, so didn't think the extra 100bucks was worth it. I should be able to push it higher but even saying that I would be very happy with 3.8ghz.

Prices here are 449 for 9550 and 544 for 9650 in AU dollars. Plus the q9650 are on pre order :(
 

edplayer

Platinum Member
Sep 13, 2002
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Originally posted by: Dark Cupcake
I'm in Australia, and those "q9550s" are not even listed in the online shops here and would probably have a high price.

they are not for sale in the U.S. yet

 

demiurge3141

Member
Nov 13, 2007
183
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Well it must be pretty hot this time of the year in Brisbane....

Originally posted by: Dark Cupcake
I'm in Australia, and those "q9550s" are not even listed in the online shops here and would probably have a high price.
I'm in Brisbane on work training and though I might save the 20 bucks shipping and pick up the chip now. The local shops where I live probably with the pricecuts would be more expencive than original introduction price in online shops :p

I was considering getting a q9650 before but changed my mind after my board and mem did 450 fsb on stock volts, so didn't think the extra 100bucks was worth it. I should be able to push it higher but even saying that I would be very happy with 3.8ghz.

Prices here are 449 for 9550 and 544 for 9650 in AU dollars. Plus the q9650 are on pre order :(

 

F1shF4t

Golden Member
Oct 18, 2005
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Originally posted by: demiurge3141
Well it must be pretty hot this time of the year in Brisbane....

Yep. Temps were probably in the 30's. Lets just say its not a good idea to be outside in work wear (black pants, shirt etc) in this weather :p
 

f111

Junior Member
Jan 22, 2009
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Waste of money. If you really were going to upgrade to another quad, it should be a wait for the i7 to come down in price. It overclocks well and has that internal overclock when only one core is used. You saw Denithor's energy analysis and that is a great great point -- there's just not enough benefit there to warrant a q9550. Keep your q9600 and just hang on a bit longer.
 

apoppin

Lifer
Mar 9, 2000
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alienbabeltech.com
Originally posted by: edplayer
Originally posted by: Dark Cupcake
I'm in Australia, and those "q9550s" are not even listed in the online shops here and would probably have a high price.

they are not for sale in the U.S. yet


i just got my Q9550-S spec
- yesterday .. i haven't installed it yet but i will tonight

http://processorfinder.intel.c...tails.aspx?sSpec=SLGAE

it is engineering sample, but i will put it to the usual tests against my C2D e8600 .. which is at 4.0Ghz, right now
--i will go for max OC on both and report the differences - in mostly gaming ..
 

dust

Golden Member
Oct 13, 2008
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Wow. Never used Linpack myself, but those temps seem quite high. High sixties is where I would allow them to be. Could be the Linpack however, like I said I've never used it. Plus the vcore seems low enough and well within safe limits.
 

F1shF4t

Golden Member
Oct 18, 2005
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Originally posted by: Drivenbyvoltage
Wow. Never used Linpack myself, but those temps seem quite high. High sixties is where I would allow them to be. Could be the Linpack however, like I said I've never used it. Plus the vcore seems low enough and well within safe limits.

Yea its due to linpack. Prime 95 temps are maxing out around 62C.
 

F1shF4t

Golden Member
Oct 18, 2005
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Originally posted by: Denithor
What kind of cooler are you using?

TRUE in a push-pull config. Its all in a TT Armour case with 2 120mm fans in the front and one 120mm fan at the back of the case.

Taking off the side panel does reduce the temps but thats due to the intake going through 6 HDDs first and the 4870s do produce enough heat of their own too.

Edit: Also its AU summer, so room temps of 30C are possible at times. When it gets cooler temps should be lower by about 10C. (I don't have aircon in comp room)