Difference between ES 2720qm?

I'm curious about the differences between the ES cpus of the 2720qm?
I've seen the Q1CL and the Q154, any differences between the two regarding temp sensors and locked/unlocked multipliers, or even a QS version?

 

I've seen some Q154's with 8mb cache reported in CPU-Z instead of the standard 6mb. So maybe intel where testing the 2720qm with an extra 2mb. Which would mean it should be faster than a standard 2720 with the extra cache

Can't 100% confirm this however. Can anyone?

 

Mine reports 8MB in CPU-Z. I don't know how to tell if it is Q1CL or Q154 though.

Can't comment on locked multipliers since I don't seem to have the option in BIOS to change it. Temperature sensors seem to work fine, though.

 

Nice, out of interest how does it bench Vs a standard 2720qm. It should be slightly faster with that extra 2mb cache.

 

I just ran passmark CPU tests, and it looks like it's actually a good deal slower than retail 2720QMs, compared to the baselines I downloaded. I got a CPU score of 6823, and the 2720QM baselines seem to come in around 7600. Using the 'find identical' search I found a baseline that came in at 6643, which is close to what I got.

SuperPI 1M came in at 12.3s, and 2M at 27.8s, which are both slower than the averages listed on notebookcheck (11.4s and 26.8s respectively).

I think it may have to do with turbo on this particular CPU. I never saw it go above 3GHz (supposed to be 3.3GHz) in SuperPI, and it seemed to fluctuate between 800MHz and 2.4GHz for the passmark tests - although I don't know what they turbo they're supposed to hit with all cores being used, and the 800MHz might have been throttling down between tests.

 

That easy enought to fix.I've had a few in my life and all fine. A X9100 extreme core duo in my old gateway and this current i5 580m is also a QS/ES. No issues.

Please try throttlestop and rerun the tests and let us know? That should stop it from jumping about from 800mhz to 3.0Ghz and lock it down at max speed. I think then you'll fine it will preform on par if not better than the stock version.

download is here for throttlestop: Downloads | Tech|Inferno

 

Thanks for the suggestion. I've been tinkering with the program, but many of the settings are unfortunately locked. Turbo ratio / power limits are both unavailable, as is the max C state. Setting the multiplier to 'Turbo' with force TDP at 1000 and C0% at 0 seems to have had no effect either - the benchmark scores remained the same.

TPL limit #2 is 56W, and I noticed that when running the benchmarks the power reading hits this level. Is it possible that this ES CPU is just extra power hungry, which prevents it from turboing up as high as a retail CPU?

FWIW temperature maximum reads 61C.

Let me know if there is anything else I could try - seems to be a lot to this program that I'm not too familiar with.

 

I just bought a i7-2720qm ES on ebay, and it has 8mb of L3 cache also. Here are the screen shots.



7683 was my passmark CPU score with it. That makes me feel a little better about it that it got similar to other 2720s.

 

Try just setting the clock modulation to 100% and the multiplier to turbo. That should give you max speed and stop it throttling when you benchmark it. Try that and let us know.

@ValkerieFire. As I thought, its higher than a OEM i7 2720qm which is around 7200 points http://www.cpubenchmark.net/cpu.php?cpu=Intel+Core+i7-2720QM+@+2.20GHz

Infact that beats a 2820qm Which gets 7592 points http://www.cpubenchmark.net/cpu.php?cpu=Intel+Core+i7-2820QM+@+2.30GHz

 

I think those published scores are a little off, I scored a 6808 with my 2630qm and that is above the published average of 6300.

 

ValkerieFire do you have any throttling issues with your i7 2720qm ES ? Was it a Q1CL or Q154 ? I might be getting one...

 

Mine is a Q154. You can see all the specs on the screen shot link I posted earlier. I don't know much about throttling issues, so I don't know if I have it or not. It seems to idle at 2.8-3.0 ghz on all 4 cores when I watch HWinfo. I've seen it turbo up to 3.2 on the intel meter.

 

Just completed a 6 hour run of Prime95. Max temp on the CPU was 80C, averaged 77C on most cores w/100% load. Zero errors. Despite my attempts to find something wrong with this ES cpu, it seems to work pretty dang good.

 

I tried it a few times with these settings, and the scores are still hanging under 6800. Do these settings look right to you?

 

Wish I could help you. I don't know anything about Throttlestop. Where did you get your ES cpu? I got mine on eBay.

 

Just completed another 9 hours of Prime95, max load, zero errors. I am officially done flogging this CPU, I think it is good to go.

 

Its a good one then I've never had any issues with my ES/QS chips in the past and you save a bit. Normally they are half price too Vs OEM ones

 

Good thread as I'm going to buy one i7-2720qm myself.

What do you guys think about this from Ebay:
Intel i7-2720QM QS (qualification sample) Q1CL (279 dollar) http://cgi.ebay.com/Intel-Core-I7-2...1CL-/190554112555?pt=CPUs&hash=item2c5de9022b
or
Intel i7-2720QM ES2 Q154 with 8mb cache? (188 dollar) http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280618738491


Going to be in my Clevo P150

 

these guys have g154 according to the screenshots. 188dollar one

 

I asked one ebay seller (sells the QS Q1CL version) this:
what are the difference between ES, QS and OEM?

Answer:
Hi, basically, Engineering sample is the premature model when Intel develop a new model. When it become mature, it is Quanlification sample and retail version. So, maybe es maybe not as stable as QS or retail version, which depends. But ES's multiplier is not locked.

 

I don't see any links on your post. Can you edit it? Which seller are you looking at? Mine was Sherrly's CPU service.

 

My post? It is edited now..

 

So if the multiple isn't locked? Can we overclock it too ?? Or force higher multipliers??

 

Hendrickson:
I guess we can force higher multiplier. I have done that to other CPU's., but that was not with a laptop..




Off-topic...

Lol. With my old dell inspiron 6000 I get 385 points in CPU mark. (Intel Pentium M 2.13GHz). But I beat everyone else that have dell 6000, hehe. I didn't know it was that big difference...

 

This is the one I bought.... http://cgi.ebay.com/New-Intel-Core-...45W-/250854971128?pt=CPUs&hash=item3a681f16f8

The Taiwan ones look like the same chips, but they are shipped from further away. My seller is from China, but also ships from the USA. Mine was shipped from New Jersey and arrived in 3 days.

I don't know if mine is unlocked or not. If it is the same as the Taiwan sellers, then I assume it is, but I'm not really interested in OC'ing it, I just wanted a cheap 2720.

 

I might be considering trying your vendor out. I need to replace this crappy dual core on my replacement machine as soon as I can and I think a 2720QM ES is good value for the performance.

 

People, please understand that most every laptop manufacturer for Sandy bridge has locked down the multipliers even on an unlocked cpu via a bios lockbit. With the lockbit enabled, we have 0 control over the multipliers outside of the normal range. Its one of the major things that discouraged me from buying the 2920xm es, since its pretty much useless on most laptops.

 

QFT. Also I am getting the 2720QM ES simply because it is not expensive and more L3 Cache is darn useful. In terms of raw power, it is already a beast for what it is worth.

Also, only AW apparently has the BIOS lockbit disabled since they do offer factory OC as an option and there is no signs for two different BIOS options for download for the models that has such options.

 

Can you unlock multiplier with a program from Windows?

Anyway, I ordered 2720qm today, $188

 

Good luck with your ES processors. Mine seems good, I hope yours are good also.

I ran one more stress test. I used OCCT to conduct an Intel burn test for 12 hours. It got the CPU 6C hotter than Prime95 (up to 87C from 81C), but my house was about 10-12F hotter also. It passed the test without errors. Now I am really done. I've done everything I can think of to break the CPU but it keeps going.

 

ES-Engineering sample--pre production models,,Heres what Intel says about them.

Processors — Information about Intel Engineering/Qualification Sample Processors

Cheers
3Fees

 

Im afraid youve got a bad ES chip. I too bought one like yours recently and was at max getting 6750. I can see from monitoring the turbo boost that basically the turbo works but does not hold speed. It will drop pretty abruptly to 800Mhz when running on load. This affected gaming as games would stutter.

What I did was I went back to my seller and asked to buy a new one. In the end he took the ES chip I had back and I opted for a Qualification Sample this time which works like a dream. Im benching now upwards of 7800 but have lost the 8mb L3 cache. Its now 6mb like the retail models. But still, it was a bargain compared to retail prices.

I guess this is the risk of buying an ES; youre liable to end up with a lemon if youre not lucky.

 

I hope mine is working

 

Well for those of you considering ES processors, I've done some pretty exhaustive testing on my processor trying to find if it comes up short compared to an OEM processor. I've run many benchmarks and compared to others on the forum aswell as notebookcheck review. Here is what I have found. The short version is my ES is just as good as an OEM benchmark wise. In a few cases it is better, and except for a minor difference 32mPi nothing was better. I don't know if the 8mb cache is helping on anything or not. I hope these help those of you looking at ES CPUs. I hope all of you get as lucky with them as I seem to have. Now if I can just sell my 2630qm and break even.

On top of each benchmark is the Notebookcheck.com averages, then below is my 2720es.

SuperPi2M, GOOD 26.7sec v. 26.7 on a Macbook Pro.



SuperPi32M, GOOD 648.6 seconds v 642.5 on a Macbook Pro (and faster than the others)



CinebenchR11.5 GOOD



3dMarkVantage GOOD, 19722 v 19716 on the Eurocom Racer Review.

19722 score, I intentionally used old video drivers on this and got a 12329 overall.

PCmarkVantage 18008, but the comparison dones't look fair.

18008 overall.

3Dmark06 5729 CPU vs 5708 on the Eurocom Racer

19305 overall & 5729 CPU

 

It arrived today. LOL, the fastest shipping I have ever seen from Taiwan!!

 

Cool let us know how it goes. 3dmarkVantage or passmark are good benchmarks go test it out. You can look at my scores to see where normal is. Around 7600 on passmark and 19000 CPU score for 3dmarkVantage.

Goodluck.

 

Will do! I just have to receive my P150 first

 

When does your laptop come? I am interested to see how your 2720 turns out.

 

About wednesday

 

Well I was about to join the bandwagon but Dell is sending me a new replacement M6600 with a 2720QM from the factory, so I am backing out, but I am still wondering if the ES's 8 MB L3 makes it superior to the final OEM ones. Very curious to find out from all of this!

 

You can look at all the benchmarks I ran above. I'd say they are near identical, mine gets a few hundred points higher on 3DmarkVantage CPU, but it's really inconsequential. I only did it because I wanted a 2720 for the price of a 2630qm. I wonder if my ES may use more power. But I'm not really interested in doing the tests to find out.

 

My new cpu

 

Congrats. I would run 3dmarkVantage and Passmark and check your scores. You can also run prime95 to test your temps. Mine maxes out at 80C +\-

Have fun.

 

6909 cpu points, hmmmm

 

I never gets over 2624 mhz.

 

I never even tried to use throttle stop on mine. Download CoreTemp, and use it to see your speeds on all 4 cores. Also download Intel Turbo Meter 2.0. I use the CPU gadget that comes with windows 7 to watch my cores usage. Between all those you should be able to tell if it is working correctly. 6900 isn't bad on passmark, that is what they say te average is for a 2720. We have different laptops so there could be other factors. Mine runs at 2.6ghz over long periods of time, but can do 3.0ghz on all four cores for short periods. Prime95 is a Long term use. Also I occasionally see 3.2 or 3.3 ghz on the turbo meter.

Hope those help see what is happening.

 

When testing with 1 core the speed get up to 3.20GHz.

Guess it is working then

Used BurnIntest for 5 minutes.

temps:
61
64
65
60

 

Why do some get scores of 7800 points? I only have 6910.... hmmm

 

Mine mostly only goes to 3.2, but I have seen 3.3 on brief moments. Your system should be comparable to mine I would think. What are your power profiles? Are you on battery or AC? You should be on AC power and a high performance power profile. Also check passmark scores for other people with your laptop. You can look at the other benchmarks I posted too. SuperPi does math which is simple. To thoroughly test the CPU I ran Prime95 for 12 hours with zero errors. That may have been excessive though.

 

Hmmm, but you are getting almost 1000points more. I have contacted the seller. I uploaded mine to baseline. Cpu is identified as Intel 0 in baseline.

I'm on AC. (not the high performance profile).
But why should you get 1000 points more because you have alienware?