Be Quiet Dark Power Pro P8 1000w Review

Simulated Load Table & Ripple Results

Be Quiet P8 1000w         ATX PSU

OK, so we've seen the graphs over on the previous page. Now here's the data that they were derived from.

Be Quiet! P8 1000w Load Results @ 50°C
   +3.3v  +5.0v  +12v  +5vSB  -12v  AC Watts /
 DC Watts
 Efficiency  Intake /
 Exhaust
Δ Temp
Test1
(25%)
5.50A 5.50A 16.75A 1.00A  0.12A 282w /
255w
90.42% 50.5°C /
50.9°C
0.4°C
3.33v 5.07v 12.06v 5.02v  -11.85v
Test2
(50%)
11.00A 11.00A 33.50A 2.00A  0.25A  350w /
508w
91.86%  50.1°C /
53.5°C
3.4°C
3.28v 5.04v 12.00v 4.94v  -11.90v
Test3
(75%)
16.50A 16.50A 50.25A 3.00A  0.37A 835w /
758w
 90.77% 51.0C /
55.9°C
4.9°C
3.24v 5.01v 11.94v 4.86v -11.99v
Test4
(100%)
22.00A 22.00A 67.00A 4.00A 0.50A 1124w /
1002w
89.14%  49.8°C /
56.0°C
6.2°C
3.21v 4.98v 11.86v 4.80v -12.02v
TestX1
(x-load)
22.00A 22.00A 1.00A 0.00A 0.00A 239w /
194w
81.17% 49.5°C /
50.0°C
0.5°C
3.27v 5.04v 12.04v 5.09v -12.32v
TestX2
(x-load)
 1.00A  1.00A  67.00A  0.00A  0.00A 884w /
810w
91.62%  50.8°C /
58.8°C
 8.0°C
3.30v 5.04v 11.96v 5.08v -12.53v
TMax1
(Max)
 30.00A 30.00A 85.00A 4.00A 0.50A 1486w /
1276w
85.86% 48.5°C /
62.4°C
 13.9°C
3.20v 4.96v 11.86v 4.77v -0.11v


To reiterate what's already been said over on the previous page, the Dark Power Pro P8 shows excellent voltage stability on the +12v and +5v rails across all loads including the cross-load and max load tests. The +3.3v rail is the only area where the unit is let down a little, but even then the voltages still remain fairly acceptable and well inside ATX specifications.

Another thing I've already mentioned is the results from the 'Max Load' test where the PSU showed that it was capable of holding 1276w continuous. Not only that, but if you look at the load on the +12v rail it held a massive 85A load - plenty enough for any kind of crazy over the top multi-GPU configuration.

Efficiency was also above expectations with the unit sticking to around 90% efficiency through Tests 1-4. Only in the first cross-load test did it drop down to 81%, but this is quite common for most PSU's when a heavy load is placed on the +3.3v & +5v rails with little on the +12v rails

Be Quiet! P8 1000w Scope Results @ 50c
   +3.3v  +5.0v  +12v
Test1
(25%)
Be Quiet Dark  Power Pro P8 1000w Review Be Quiet Dark  Power Pro P8 1000w Review Be Quiet Dark  Power Pro P8 1000w Review
Test2
(50%)
Be Quiet Dark  Power Pro P8 1000w Review Be Quiet Dark  Power Pro P8 1000w Review Be Quiet Dark  Power Pro P8 1000w Review
Test3
(75%)
Be Quiet Dark  Power Pro P8 1000w Review Be Quiet Dark  Power Pro P8 1000w Review Be Quiet Dark  Power Pro P8 1000w Review
Test4
(100%)
Be Quiet Dark  Power Pro P8 1000w Review Be Quiet Dark  Power Pro P8 1000w Review Be Quiet Dark  Power Pro P8 1000w Review
TestX1
(x-load)
Be Quiet Dark  Power Pro P8 1000w Review Be Quiet Dark   Power Pro P8 1000w Review Be Quiet Dark  Power Pro P8 1000w Review
TestX2
(x-load)
Be Quiet Dark  Power Pro P8 1000w Review Be Quiet Dark  Power Pro P8 1000w Review Be Quiet Dark  Power Pro P8 1000w Review
TMax1
(MAX)
Be Quiet Dark  Power Pro P8 1000w Review Be Quiet Dark  Power Pro P8 1000w Review Be Quiet Dark  Power Pro P8 1000w Review


EEK! No I didn't mix up the results from the +12v rail with those from a Seismograph in the middle of an earthquake! But yes, the ripple on the +12v rail is less than ideal with the results climing from 50mV in Test 1 to a maximum of 136mV in Test 4. Considering that ATX specifications state that ripple on this rail should be no more than 120mV it looks like Be Quiet have some work to do here. Of course, these levels aren't exactly dangerous - for example I've seen other well known brands hit over 250mV, but there are still plenty of other brands on the market that do a much better job.

The +3.3v and +5v rails on the other hand were quite acceptable, with the closest call being the +3.3v rail in Test 4 that came within 8mV of ATX's recommended 50mV limit.

Now let's try and form some kind of conclusion...           

«Prev 1 2 3 4 5 6 Next»

Most Recent Comments

29-04-2010, 06:13:05

tinytomlogan
Big watt PSU's are back on the shopping lists for many, Be Quiet have sent us their latest 1000w for the OC3D famous torture test.

Continue Reading

04-05-2010, 23:19:17

bantian603
wow cool staff

05-05-2010, 03:10:58

AMDFTW
Spam
Reply
x

Register for the OC3D Newsletter

Subscribing to the OC3D newsletter will keep you up-to-date on the latest technology reviews, competitions and goings-on at Overclock3D. We won't share your email address with ANYONE, and we will only email you with updates on site news, reviews, and competitions and you can unsubscribe easily at any time.

Simply enter your name and email address into the box below and be sure to click on the links in the confirmation emails that will arrive in your e-mail shortly after to complete the registration.

If you run into any problems, just drop us a message on the forums.