| Index | Recent Threads | Unanswered Threads | Who's Active | Guidelines | Search |
 |
World Community Grid Forums
Category: Community
Forum: Chat Room
Thread: Intel stick computing |
| No member browsing this thread |
|
Thread Status: Active Total posts in this thread: 15
|
|
| Author |
|
|
OldChap
Veteran Cruncher UK Joined: Jun 5, 2009 Post Count: 978 Status: Offline Project Badges: 
|
https://www.cpubenchmark.net/cpu.php?cpu=Inte...0+%40+1.99GHz&id=2131
----------------------------------------In this it is no better really @ 190  [Edit 1 times, last edit by OldChap at Apr 26, 2015 8:03:36 PM] |
||
|
|
Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Yes, J1900 has 190 according to the power efficiency chart, which is deriving its results from Intel's TDP-values. Z3740 has 268, Xeon D-1540 has 265 and Z3735F has 202. But keep in mind that Intel also uses TDP-values for positioning the processor in the right market segment. As you all already know, just because it has 10W listed, doesn't mean it's dissipating that much heat. Power efficiency is important, and the Z3740 does impress, considering how cheap it is, but we also have to take into consideration how much time we are willing to spend on low-performing systems.
cpubenchmark.net/compare.php?cmp[]=2131&cmp[]=2326&cmp[]=2059 I'm still searching for the right personal balance, money vs performance vs time. Imagine how it would feel having to do monthly Windows updates on a few dozen energy efficient tablets ... I think I read on Xtremesystems a while ago, that Oldchap bought the J1900 mostly to see what he could expect from the upcoming D-15xx. Below is another list with CPU benchmarks: J1900 , C2750 , D-1540 cpubenchmark.net/compare.php?cmp[]=2131&cmp[]=2185&cmp[]=2507 It will be interesting to see how many points the upcoming D-1520 will have compared to J1900, and how much it will cost together with a board. I'm assuming it will be sold preassembled on a board, just like the J1900. But there doesn't seem to be any correlation between the processor price on Intel Ark and the retail price when assembled onto a board. Intel Ark is listing the C2750 at twice the price compared to J1900, but the retail price of the C2750 preassembled on a board is six times higher than J1900 with a board. One can only hope this also will be the case with the price of D-1520, considering that the price of D-1540 is a whopping €943. Going back to what i wrote earlier about TDP not being an accurate guidance, I'll compare these two processors, which have the same micro architecture. cpubenchmark.net/compare.php?cmp[]=1263&cmp[]=1304 L5640 has a 60W TDP and 6837 points. X5650 has a 95W TDP and 7610 points. (7610/95)60 = 4806 If TDP were an accurate measurement, L5640 would have 4806 points. But it has 6837. So either the points are wrong or Intel has opted to skew the TDPs for marketing reasons. |
||
|
|
OldChap
Veteran Cruncher UK Joined: Jun 5, 2009 Post Count: 978 Status: Offline Project Badges:
|
Small update on the Q1900m:
----------------------------------------running 2 x OET plus 2 x FAHV on a seasonic bronze ss330gb psu, my Kill-a-Watt clone reports 17.5 watts. passive cooling calculating power from wall gives 238v * 0.12a = 28.56va. Such inefficiencies will be overcome by using a piggyback connection to an existing rig. This combination is just 61% efficient Once I have some good numbers I will make a new thread [Edit 2 times, last edit by OldChap at Apr 27, 2015 5:09:12 PM] |
||
|
|
Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
And I'll read it. But I don't understand the 0,12A. Did you measure that, and if so, where?
|
||
|
|
OldChap
Veteran Cruncher UK Joined: Jun 5, 2009 Post Count: 978 Status: Offline Project Badges:
|
No special testing yet. there probably won't be. this number is just that shown from selecting amps on the Kill-a-Watt. Voltage and Watts are done in the same manner.
---------------------------------------- |
||
|
|
|