On 2/24/2011 3:43 PM, ken mays wrote:
Actually, take note that heavy calculations are offloaded to GPUs
or specialized hardware nowadays.
Many ways to skin something....
~ Ken Mays
--- On Thu, 2/24/11, Orvar Korvar<knatte_fnatte_tja...@yahoo.com> wrote:
From: Orvar Korvar<knatte_fnatte_tja...@yahoo.com>
Subject: Re: [osol-discuss] Another [OT] Hardware Post
To: opensolaris-discuss@opensolaris.org
Date: Thursday, February 24, 2011, 3:14 PM
Thanks for the tips, but I also need
to do heavy development and run heavy calculations. So I
need a beefy CPU above all. But I prefer if it has low power
requirements.
That is the reason Sandybridge is what I prefer. I have to
wait and see how the 3D graphics driver turns out....
--
Also, I just looked, and you're not going to find a SandyBridge-based i7
that is under a 65W TDP profile. That's the i7-2600S
(http://ark.intel.com/Product.aspx?id=52215), which runs about $400.
If you want under 65W and a SandyBridge, you have to step down to the
i5. Specifically, the i5-2500T
(http://ark.intel.com/Product.aspx?id=52212) for $270 does 45W.
The i7 will significantly out-perform anything else available. But, a
SandyBridge i5 won't. It won't be noticeably faster than the last-gen
Clarksdale i5, or the various current-gen Athlon II
Also, remember, that practically all modern CPUs will idle down
significantly when not under load. So, the max TDP of a CPU will be
significantly more than actually consumed most of the time. For this
reason, I'd look at Clarksdale-based i5 and Athlon II X4 systems with a
higher TDP than 45W, and consider that they don't actually pull what
they indicate.
Similarly, while the nVidia gtx 460 is going to pull 200W at top rev, a
modest nVidia gtx 240 might pull 40W under max load, and a quarter of
that (or less) when doing 2D.
One last thing: DDR RAM power consumption is non-trivial these days.
Specifically, DDR2 w/ ECC is going to consume less power than DDR3 (even
non-ECC), by 15% or more. So, if you really care about that, a 65W
Athlon II using DDR2 RAM with ECC may very well pull similar power to a
45W SandyBridge w/ DDR3, under most load situations.
The sad fact right now is that the integrated video of the SandyBridge
isn't supported. It may very well be, but that's a complete unknown, and
it *won't* be made known UNTIL Oracle decides to actually ship it the
next day.
--
Erik Trimble
Java System Support
Mailstop: usca22-123
Phone: x17195
Santa Clara, CA
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