Apple iMac specific C2D CPUs anyone?

I'm interested in having a bit of a speed boost over my T9400, I don't want to spend much so I have seen some of these iMac specific C2Ds on a well known auction site.

Now before anyone jumps on me, yes I did do a search and I found some stuff relating to the very high TDP on SOME of these cpus, eg. SLAQD @55W.

But I'm only interested in the SLGEB (35W) and possibly SLGEA (44W), which have the same TDP as the equivalent C2D.

So I looked all over and didn't find much info on these. What I am wondering is if they still have all of the normal features of the C2D, like VT, EIST, Em64t, etc.

The most info I could find was from wikipedia...

Code:

"Penryn" (Apple iMac specific, 45 nm)
Die size: 107 mm²
Steppings: C0, E0
Model Number	        sSpec Number	Frequency	L2 Cache FSB	        Mult	Voltage	TDP	Socket	Release Date	Part Number(s)	Release Price (USD)
Core 2 Duo E8135	 SLAQA (C0)  	2400 MHz	6 MB	1066 MT/s	9x		44 W	Socket P	April 2008	FF80576E8135	
Core 2 Duo E8135	 SLG8W (C0)     2667 MHz	6 MB	1066 MT/s	10x		44 W	Socket P	March 2009	AW80576E8135	
                         SLGED (E0)	2667 MHz	6 MB	1066 MT/s	10x		35 W	Socket P	March 2009		
Core 2 Duo E8235	 SLAQB (C0)	2800 MHz	6 MB	1066 MT/s	10.5x		44 W	Socket P	April 2008		
Core 2 Duo E8335	 SLAQC (C0)	2667 MHz	6 MB	1066 MT/s	10x		44 W	Socket P	April 2008		
                         SLGEB (E0)	2933 MHz	6 MB	1066 MT/s	11x		35 W	Socket P	March 2009		
Core 2 Duo E8435	 SLAQD (C0)	3067 MHz	6 MB	1066 MT/s	11.5x		55 W	Socket P	April 2008		
                         SLGEA (E0)	3067 MHz	6 MB	1066 MT/s	11.5x		44 W	Socket P	March 2009		

So I'm looking for someone who has one and can comment please.

 

Since no one here seems to know much about these, or may be trying to keep them a secret, I have just pulled the trigger on a OEM SLGEB 2.93GHz E0 stepping 35W E8335. It is supposed to be identical in every way (except name) to a T9800, only half the price.

I will report back when I have tried it.

 

I wish there was one with an 800mhz FSB.

I hope it works for you, good luck

 

Ok I have tested this CPU now, an OEM SLGEB 2.93GHz E0 stepping 35W E8335.

I can confirm it is exactly the same as a T9800, all the same features, only thing is it doesn't appear to have IDA, but I think that could just be a setup issue on my laptop. Can anyone confirm if a proper T9800 has IDA?

Its lowest supported VID is 1.050 and highest is 1.225, which are also the defaults, with 1.100V in between. It supports DFFS and so idles at 800MHz. I have run it fully stable at 2.93GHz and 1.125V, which is the same as other E0 stepping C2Ds I've got. It runs at 1.100V too but fails p95 after a while.

So in summary, I reckon this thing is great value for money compared to a labelled T9800.

 

T9800 has IDA for sure... all T9000 series do...

 

Are you keeping the CPU cool?
Because when mine is hot IDA doesn't ever engage.

Try using crystalcpuid to change the multi and see if you can get IDA working with it.

 

This thing runs as cool as my T9600 does. I've never been able to get the crystalCpuId program to work, it always BSODs whenever I try to set a multiplier, even fully supported ones.

I'm clinging dearly to RMClock. The option for IDA (and DFFS) are greyed out. DFFS still works though (assuming that is the same thing as superLFM), but I haven't seen any evidence of IDA working. Usually it is the last entry in the RMclock profile setup. But I just get the standard 11x multi last. Oh well, I rarely saw IDA actually working on any supported C2D under XP anyway, so no great loss.

 

Just to add, yep these are like a kind of a secret . But if you really know about them , you would avoid them in some cases...

Try to benchmark your processor they dont have the same power per mhz, the E8335 (2.933 ghz) is a very good one but it has roughly the same power as the t9600 if not less . I would love to have a t9600, I think it is more than enough

If you dont belive me take a look:

http://www.cpubenchmark.net/cpu_lookup.php?cpu=Intel+Core2+Duo+E8135+@+2.66GHz


PS: Also they arent that good for overclocking thats why I dont like them .

 

I have a T9600 as well. I have now benched them both on identical hardware (different OS installs though) and the E8335 scores 51 more "CPU points" than the T9600. That seems to be quite significant from what I can tell.

Interestingly, I cant get scores anywhere near what they are listing up there, even with the same model laptop. Maybe its because I'm using XP? I also might try swapping HDDs to give a better comparison.

Ok you got me worried enough to bench them both with the same HDD installed in identical laptops (except for the CPU of course!)

The E8335 gets 1902.8 against the T9600 with 1781.9. So there is a difference of 120.9. If you look at those graphs you posted earlier, you can see that there is a 194 point difference between the averaged scores of a T9800 vs T9600. So I reckon my relative result is within the ballpark, even though I'm about 250 points down on those results. In fact that deficit kind of supports what I'm saying since the graphs have an exponential component. (ie. the higher the score, the greater the relative difference between CPUs)

So I think I have dis-proven your heads-up for the E8335 (the 2.93GHz version of it - there is also a 2.66GHz version with the same name). Thanks for the info though. And if I ever get my hands on a labelled T9800 I will do the test again and report back just to be 100% sure, but I'm not worried any more!

 

Just bought an E8435 SLGEA along with some IC Diamond 24, can't wait till it all comes; however I'll be at basic training so I'm not even sure how often if ever I'll be able to use my laptop.

 

Same here, my E8435 arrived today, works like a charm, 60-80% improvement in CPU benchmarks over my P-7805's "old" P8400.

 

What about the temps?