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 Dynatron/Vantec/ThermalRight shootout
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Date Posted: Sep 4 2001
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Author: Joe
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Posting Type: Review
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Category: Air Cooling Reviews
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Page: 2 of 4
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Article Rank:No Rank Yet
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Note: This is a legacy article, imported from old code. Due to this some items on the page may not function as expected. Links, Colors, and some images may not be set correctly.
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Dynatron/Vantec/ThermalRight shootout By: Joe
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I know most people just want to see the
results and be done with it, but I think its essential to show you how this test is being done in order to validate the results that are seen.
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For those who don't care about the
specifics and details about the HSF testing or the detailed results can click here to go to the who won/lost. ( you will miss the majority of the review and a lot of info that will explain the results. But we don't like to discriminate against the simple minded.)
(See we are simple minded accessible)
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Testing Setup-
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As I outlined in the "Autopsy of a Review" article, the testing is being carried out on a
testing modified AMD 1.4GHz AYHJA-Y CPU. The CPU is being run at 1.65Ghz @ 1.85Vcore giving an effective heat load at full CPU load of ~94 watts. Props go out to KDComputers for this prime piece is processed sand.
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Temps will be recorded with a Thermocouple under the core epoxied and then "doped" with ASII thermal paste.
Redundant readings will be taken but the motherboard probe through motherboard monitor. Temp readings will be recorded once every 6 seconds. The reason for once every 6 seconds is because MBM only logs once every .1Min ( 6 seconds). To keep the data sync'd the Extech thermal probe was set to record at once every 6 seconds also. This lowers the fine detail of the thermal curves slightly but still offers unequaled data acquisition and and display for the readers. Temps will also be taken of the Intake air into the HSF.
Fan RPMS will be monitored and VCore voltages will be monitored to ensure same heat production per test.
With that said, the KT7A I used for the tests was reading a v1.91 Vcore when the Vcore was set to 1.85. I am going by what I set for the watt load, but if the KT7A and MBM are correct that raises the Watt output to ~98 - 99 Watts. Fan RPMS varied on the Delta fans from 7100 RPM when the CPU was at idle, to 7400 RPM when the CPU was under load. ( Due to how the PSU works, when there is a bigger pull on the 5V rail the 12V rail jumps in power. This is more pronounced in Enermax PSU's Vs other makes. .
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CPU
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ThunderBird 1.4Ghz@ 1.65GHz @1.85VCore
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Ram
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Crucial 256mb PC133 CL2
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Motherboard
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Abit KT7A - Modified for the test
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Video card
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Gainward - Cardex Twinview GF2 MX 32mb
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Nic
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Netgear FA310TX
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Hard Drive
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WD 40GB 7200RPM
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PSU
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Enermax 651
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Thermal Gear
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ExTech Dual Probe Thermometer,
RayTech IR Temp Gun
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After every mounting and remounting of the HSF's The thermal paste will be cleaned from the top of the core and from the HSF and a new application
will be put on via razor blade. We are using all ASII and all from the same batch.
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Test Script
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The testing script will be the Test parameters used to bench each HSF. These consist of timing of events, and sequence of events.
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Sequence of Events:
- (T+0)Data Logging begins - Start Point
- (T+0:10Min) Testing machine is powered up and left to idle (pre heat - Let the CPU temp stabilize)
- (T+10:10Min) Testing machine initiates CPU heat load testing for 15 Min. ( Heat Up)
- (T+25:10Min) CPU heat load test ends CPU is left to run at idle for 5 Min. ( Cool Down)
- (T+30:10Min) Data Logging Ends.
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The total time it takes to test a block is 30 min for 1 test set. Each HSF was testing twice with the same Fan, and then tested with alternate fans if
needed. The results from the redundant tests will be averaged. The tests will be valid as long as the ambient intake air doesn't vary by more then 5DegC for more then 1 min. ( a cold or warm draft wont affect the
long term test result, but a continued increase/decrease will.)
4 Temps will be recorded for each HSF.
T1 - Intake T2 - CPU Core T1-T2 The Delta between Core/Ambient. The Motherboard monitor will also be recorded for CPU Core temp. Data sample time is once every 6 seconds. All data recording (except MBM) is handled on a stand alone machine so it does no interfere with the heat load test on the core.
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The CPU heat load testing, was done with the "CPU Stability Test v6" which offers a CPU warming facility. From testing it heats the core just
as well as anything else ( Folding, Prime, etc...).
It also offers a timer and stuff that made it easy to use in this test.
If you do use this app to do load testing make sure you run it on "CPU Warming Only" If you run it on "Normal Testing" the CPU only generates
2/3 of the heat it does when you run CPU Warming.
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| Random Forum Pic |
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| From Thread: A few questions before assembly |
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| | ProCooling Poll: |
| So why the hell not? |
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I agree!
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 67%
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What?
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 17%
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Hell NO!
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 0%
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Worst Poll Ever.
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 17%
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Total Votes:18Please Login to Vote!
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