i7 Processors..any good ?

[cecofuli]

Hi Morbid Angel,
why i must disable the hyperthreading? This is one of the most important i7 CPU feature and this is why this CPU is so greate. Anyway i reboot the machine and change the bios setup for this test.

[cecofuli]

Hi Morbid, with hyperthreading OFF (I see only 4 buckets) the CORE temperature is less ( from 63°C to 58 °C) and, obviously, also the renderitme.

-----------------------------------------------------------------------
AUTHOR: cecofuli

MACHINE: papafoxtrot i7 920

Software: 3ds max 2009 - 64bit

Renderer: VRay 1.5 SP2

RAM: 6 GB

CPU TEMP : 58

CPU THREAD : 4

CPU: i7 920 2.66 @ 3.8 with hyperthreading OFF

RENDETIME: 19m 14 sec
-----------------------------------------------------------------------

[Morbid Angel]

what is interesting to me is that...did your other machine have hyperthreadig on? probably not...so for consistency i suggested that.

[cecofuli]

Do you talk about the Xeon E5440? Nope, this CPU ( Xeon E5440) has a C2D technology. Only the hold P4 Prescott had the hyperthreading features , do you remember? And now the i7.

[Dschaga]

I would say the i720 is worth the money!
It's also amazing how well hyperthreading performs with the new cpu's. ~25-30% faster, which is much better then the performance of the p4's.

It's only sad that there is no cheap chipset in sight at the moment.

[QuakeMarine1]

I am not spanish - how to get the bench scene ?

[peterguthrie]

try italian in google translate maybe

[cecofuli]

Hi QuakeMarine1,

It's Italian Anyway this is the link to the scene. But I think for the next test (v0.2) I must resize the buckets to 64x64 to 32x32. The next Xeon Family have 16 buckets, so the buckets size it's very important. Because this file is a bit old. It was for C2D with two/four buckets. Not 16 ehh...
Anyway, in our forum you can see a lot of results from AMD barton 3.2 to MID-HIGH level renderfarm.

[QuakeMarine1]

italian or spanish .. its all chinese to me

I need that scene to see how my 800core super computer render that scene in .. lets say 7000 pixel .. ?

[cecofuli]

Hi QuakeMarine1

this is a test for a little Renderfarm. LINK

OS: xp64
Software: 3ds max 2009 - 64bit
Renderer: VRay 1.50 SP2
HW:7 pc DualXeon quadcore
RENDERTIME: 0h 03m 10s
RENDERTIME for 3000*2063: 0h 33m 13s

Try to the same resolution (3000*2063), just for fun. After try 7000 px. What's you TOTAL Ghz?

[^Lele^]

Very nice stuff Francesco!
Now i have a new wish, damn you XD

[cecofuli]

Hi lele,

last night I tried different configuration. I found that my CPU has a good limit to 3.8 Ghz. See this test with Prime95 (stress CPU program, more than a VRay rendering)

(*). CPU 3.8 Ghz - vcore 1.26 - temp 66 °C
(*). CPU 3.9 Ghz - vcore 1.318 - temp 76 °C
(*). CPU 4.0 Ghz - vcore 1.38 - temp 80 °C

So, in my case, the good solution is 3.8 Ghz in daily use. Ora add a water-killer, but it's another story.

[^Lele^]

2.66 -> 3.8 LMAO.
this is getting quickly out of hand: i'm finding extremely good reasons to buy one by the minute...

[plastic_]

i can confirm that...i also stopped my i7 2.66 at 3.8.
it even works with 4 ghz (with noctua air cooling), but it gets HOT, and prime95 crashes. even with prime95 crashing, vray rendering seems to be still stable (i don't know why).
prime95 calls itself "torture test", i guess if it runs stable for a few minutes, then the system is rock solid with normal apps. at 3.8 ghz i didn't have a single crash/blue screen for 6 weeks now.

btw, the corei7 is insanely FAST. previously i worked with a q6600 quad core at 3.0ghz.
it's no match, especially with photoshop and after fx. memory bandwith makes a huge difference. but also for rendering. i don't have benchmarks, but with 8 threads it feels almost double as fast than the core2quad.

[cecofuli]

Hi plastic_

with liquid cooling i run to 4.0 Ghz with Prime95 rock solid, but in this test my CPU is VERY HOT. So, in daily usage I suggest 3.8 Ghz ( I think this is the physical limit "normal" usage). Prime95 is very, very torture test. If with Prime95 al work fine, sure that with rendering process all are ok. And yes, this CPU is very fast, more than old Q6600. From about 1-2 month Intel will sell the new Xeon Quadcore with Nahlem architecture, but the 2.66 Ghz is very expensive and we cannot (I think ) overclock it. The 3.2 CPU will be, for a single CPU. like a $1400. Too much IMO. And in the end of 2009 AMD will be with the new 4 CPU (6CORE) Istanbul Opteron CPU with 24 buckets.
VIDEO.

PS: I like this task manager ehhh....