03-22-2011 08:10 AM
My sales droid at Lenovo, says to be patient til the 29th, this weekend. At least for US customers. Apparently that is when the better equipped T520's will appear here.
I appreciate your summary of your research. I sit here with the reference pdf copied and annotated by my desk but am still waiting for the better T520's and the W520 to be up on the site so I can be certain of the price difference.
For instance it appears that a very well equipped (FHD, good graphics, 2720qm chip, etc) W520 in the 4276 code will be about the same cost as a well equipped T520. But the same equipment or very nearly the same in a W520 with a 4282 or 4284 code are about $800 US more. And I can't yet reconcile the differences.
We shall see very soon.
BTW, the quad core I7 2720QM T520 was up on the US website for about 4 hours last Friday, but without switchable graphics. I tried to order it and got a message in my Cart that it was not a proper config. That is when I contacted Lenovo and was told to wait til the 29th.
03-22-2011 11:58 PM
As the man standing in the railroad tunnel said as the train approached him... I see the light
Since the i7-2620M dual core, clocks at 2.70GHz (gigaflops),
when it is handling a single thread of instructions, it will complete the task quicker than a i7-2920XM quad core Xtreme clocked at 2.50GHz.
Because hyperthreading allows the 2nd generation Intel dual core processor to handle two threads per core, a 2nd generation dual core processor can be concurrrently working on up to 4 threads at a time.
I expect that during system boot, hibernate and resume, Windows 7 presents quite a few threads for processing, and a Quad core can crunch up to 8 threads to completion, quickly.
On the other hand when I am doing a rebuild of a single database file, that job probably only presents one thread, and processor clock speed becomes the key factor in when the job completes.
That German T520 4243-3UG model, is pretty much what I am looking for, I guess its time to relax and wait. Or, start learning Deutsche so I can read that keyboard!
Thanks for the reinforcement on the wait a week until March 29th message.
I cannot explain the difference in price between a
W520 4276-37U $1628
W520 4282-3SU $2404
01-06-2012 06:37 PM
I thought I would update this thread.
I am running a T520 (November 2011 ship-date) with 16 GB. I run mine strictly with Discrete Graphics with Fedora 16 x64 and Windows 7 Pro (that it shipped with). It has been running for a week now and I have not noticed any issue(s) thus far.
[root@neo ~]# cat /proc/cpuinfo | tail -25
cpu family: 6
model name: Intel(R) Core(TM) i7-2760QM CPU @ 2.40GHz