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Shonk

Xeon E3-1240 V2 - Xeon E3-1265L V2 Comparison

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ArnisR

>Xeon E3-1265L V2 - Highest Observed Load Wattage @ 3600mhz 38.8w  

There shouldn't be  @ 3100mhz?

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Shonk

Yes

typo its ofc 3100mhz

>Xeon E3-1265L V2 - Highest Observed Load Wattage @ 3600mhz 38.8w  

There shouldn't be  @ 3100mhz?

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Shonk

The comparisons arnt quite 1/1
I didnt realise i had 2 fan reducers on the 1240 V2 Blower (Delta BFB0512LD)

E3-1265L V2 had a dynamode 3 pin fan reducer for 2960 RPM
E3-1240 V2 had Both Fan Reducers for 2490 RPM

3850 RPM Stock
3375 RPM Akasa Fan Reducer
2960 RPM Dynamode Fan Reducer
2490 RPM Both Fan Reducers

sorted it now and both are
2960 RPM Dynamode Fan Reducer


Updated Xeon E3-1240 V2 with fan at 2960 RPM

Lowest Observed Idle VID @ 1600mhz 0.9056v
Lowest Observed Idle Wattage @ 1600mhz 4.84w
Highest Observed Load Wattage @ 3600mhz 54.09w  (Prime 95 8 thread Inplace Large FFT's)
Lowest Idle Temp 24°C Rear Fan 13%
Current Temp 86°C Highest Temp 86°C (5 Mins Prime 95 8 thread Inplace Large FFT's) Rear Fan 13%
Current Temp 91°C Highest Temp 94°C (10 Mins Prime 95 8 thread Inplace Large FFT's) Rear Fan 40%
Current Temp 85°C Highest Temp 94°C (15 Mins Prime 95 8 thread Inplace Large FFT's) Rear Fan 47%
Current Temp 84°C Highest Temp 94°C (20 Mins Prime 95 8 thread Inplace Large FFT's) Rear Fan 41%
Current Temp 85°C Highest Temp 94°C (25 Mins Prime 95 8 thread Inplace Large FFT's) Rear Fan 41%

 

Xeon E3-1240 V2 IDLE

1240v2_Idle_13.png

 

5 Mins Prime95

http://s5.postimg.org/4rdxesivr/5min.png

 

10 Mins Prime95

http://s5.postimg.org/mvgxzfgk7/10min.png

 

15 Mins Prime95

http://s5.postimg.org/x838lia3b/15min.png

 

20Mins Prime95

http://s5.postimg.org/hy3debel3/20min.png

 

25 Mins Prime95

http://s5.postimg.org/pzrlw7xcn/25min.png
 

 

I really should run the Delta BFB0512LD at 3850 rpm as its only able to keep the

Cpu under control without help from the case fan going into overload for around 6 mins at 2960 RPM

 

In the long term im going to try and get a 65 watt tdp microserver heasink

Edited by Shonk

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gordan

Those temperatures seem rather ludicrously high. Are you sure that small noisy centrifugal fan is actually doing anything useful relative to the noise it is producing?

As you can see here:

http://homeservershow.com/forums/index.php?/topic/5895-potential-cpu-upgrade-options-for-microserver-g8/?p=106977

my 87W E3 1290 v2 tops out at 84C under a load implausibly high under real world conditions, and I am running the stock heatsink with no active cooling, only a bit of ducting to help the 120mm exhaust fan do a more effective job of cooling the CPU. In light of that, what is the point of having a small noisy fan directly on the heatsink? It certainly doesn't improve on the ducting as far as CPU temperature is concerned.

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Shonk

Those temperatures seem rather ludicrously high. Are you sure that small noisy centrifugal fan is actually doing anything useful relative to the noise it is producing?

As you can see here:

http://homeservershow.com/forums/index.php?/topic/5895-potential-cpu-upgrade-options-for-microserver-g8/?p=106977

my 87W E3 1290 v2 tops out at 84C under a load implausibly high under real world conditions, and I am running the stock heatsink with no active cooling, only a bit of ducting to help the 120mm exhaust fan do a more effective job of cooling the CPU. In light of that, what is the point of having a small noisy fan directly on the heatsink? It certainly doesn't improve on the ducting as far as CPU temperature is concerned.

 

 

Its hard to compare

you are not giving a complete picture of

load / wattage / realtime die temps / time running / fan speeds

 

I could show you a picture of it pulling 52 watts with the die temp at 60°C

but that wouldnt be the same as pulling 52 watts for 40mins constantly

 

Im at the lowest possible fan speed

 

e.g. as its cold today

 

my inlet was 18 at the start

 

it lasted 9mins at 9% fan speed doing a prime

at 10 mins the fan was at 16%

at 16 mins the fan was at 30%

at 27 mins the fan was at 26%

at 38 mins the fan was at 27%

 

the small noisy centrifugal fan is silent at 2960 rpm hence why i run it at that speed

 

and yes it makes a huge difference

its fully able to keep the case fan incheck with the 1265L V2

its able to keep the case fan incheck under most workloads with the 1240 V2

 

e.g. going from 2490 rpm on the fan to 2960

dropped the case fan from 49% at the 20min mark

to 41% at the 20min mark (yesterday)

without the fan the case fan would most prob have have had be in the 65-70% range

 

Prime at 38 Mins Case Fan 27% Today

http://s5.postimg.org/k2sbt55li/38min_27.jpg

38min_27.jpg

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gordan

you are not giving a complete picture of

load / wattage / realtime die temps / time running / fan speeds

 

I didn't have a wattage reading, no, but I think it is safe to assume that it was as close to 87W as is plausibly achievable.

 

The load was maximum possible using "minerd --algo=scrypt --benchmark", which produces even higher temperatures than OCCT tests.

 

That post does in fact show realtime die tempts (they all hovered in that range, and those readings were taken after several hours under the load described above): 80C-84C

 

The fan speed is also listed at 36% (set to automatic, no manual control was used).

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Shonk

I didn't have a wattage reading, no, but I think it is safe to assume that it was as close to 87W as is plausibly achievable.

 

The load was maximum possible using "minerd --algo=scrypt --benchmark", which produces even higher temperatures than OCCT tests.

 

That post does in fact show realtime die tempts (they all hovered in that range, and those readings were taken after several hours under the load described above): 80C-84C

 

The fan speed is also listed at 36% (set to automatic, no manual control was used).

 

 

Firstly you are never going to pull anywhere near 87w thats its tdp range not what a cpu will actually pull

 

at a guess i would say you will never pull more than 58-60w

the 1240 V2 is around 54w

 

also minderd pulls nowhere near what prime95 does around 46w in the case of the 1240 V2

 

Untitled.jpg

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gordan

also minderd pulls nowhere near what prime95 does around 46w in the case of the 1240 V2

 

 

I'll re-check with prime95, but my past findings were that prime95 wasn't particularly good at either generating peak CPU temperatures or detecting stability issues. I'll re-test this weekend and report back with a comprison.

 

Update: Wow, seems prime95 has had some improvements recently, at a glance it does seem to generate a highe load on my laptop (the boost speed is lower than with minerd). Will definitely re-test when I am near my G8.

Edited by gordan

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Shonk

Ilo aims to try and keep the cpu under 85 btw

thats not to say that it wont hit 95 briefly until the fans kick in enough

if you monitor it in realtime

 

minderd uses around 12% less power than prime95 inplace fft's

 

im at around 15mins fan speed still 9% so ilo hasnt had to take over fan duty

and current cpu temps are 78 or under with max momentary die temp of 81

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