OCZ Vindicator: Heatpipe Tower Cooling from OCZ
by Wesley Fink on April 5, 2007 4:00 AM EST- Posted in
- Cases/Cooling/PSUs
CPU Cooling Test Configuration
The standard test bed for cooling tests uses an EVGA NVIDIA 680i SLI motherboard. This is primarily based on the consistent test results on this board and the excellent NVIDIA Monitor temperature measurement utility, which is part of the nTune program. The 680i chipset is also one of the better options for Socket 775 CPU overclocking, and it provides great flexibility in our standard cooler tests which overclock to the failure limit with each cooler tested.
NVIDIA Monitor has a drop-down pane for temperature measurement which reports CPU, System, and GPU results. Reviews at this point will concentrate primarily on CPU temperature. In addition to the real-time temperature measurement, NVIDIA Monitor also has a logging feature which can record temperature to a file in standard increments (we selected every 4 seconds). This allows recording of temperatures during testing and play back, for example, of stress test results that can then be examined when the stress tests are completed. There is also the handy reference of speeds and voltages in the top pane to confirm the test setup.
Other components in the cooling test bed are generally the same as those used in our motherboard and memory test bed:
All cooling tests are run with the components mounted in a standard mid-tower case. The idle and stress temperature tests are run with the case closed and standing as it would in most home setups. We do not use auxiliary fans in the test cooling case, except for the north bridge fan attached to the 680i for overclocking.
Since OCZ provides a small packet of a standard white thermal compound, we tested with a premium silver colored (no silver content) thermal compound we have used in testing coolers that did not include a proprietary thermal compound in the cooler kit.
In our experience the thermal compound used makes little to no difference in cooling test results. This is particularly true now that processors ship with a large manufacturer-installed heatspreader. Our only control on thermal compound is that we use the manufacturer-supplied product if they supply a premium product, or a standard high-quality thermal paste if a premium brand is not supplied.
We first tested the stock Intel cooler at standard X6800 speed, measuring the CPU temperature at idle and while the CPU was being stressed. We stressed the CPU by running continuous loops of the Far Cry River demo. The same tests were repeated at the highest stable overclock we could achieve with the stock cooler. Stable in this case meant the ability to handle our Far Cry looping for at least 30 minutes.
The same tests were then run on the cooler under test at stock, highest stock cooler OC speed (3.73GHz), and the highest OC that could be achieved in the same setup with the cooler being tested. This allows measurement of the cooling efficiency of the test unit compared to stock and the improvement in overclocking capabilities, if any, from using the test cooler.
Noise Levels
In addition to cooling efficiency and overclocking abilities, users shopping for CPU cooling solutions may also be interested in the noise levels of the cooling devices they are considering. Noise levels are measured with the case open on its side and are measured using a C.E.M. DT-8850 Sound Level meter. This meter allows accurate sound level measurements from 35bdB to 130dB with a resolution of 0.1dB and an accuracy of 1.5dB. This is sufficient for our needs in these tests, as measurement starts at the level of a relatively quiet room. Our own test room, with all computers and fans turned off, has a room noise level of 36.4dB.
Our procedures for measuring cooling system noise are described on page seven along with noise results comparing the stock Intel cooler and recently tested CPU coolers to the OCZ Vindicator cooler.
The standard test bed for cooling tests uses an EVGA NVIDIA 680i SLI motherboard. This is primarily based on the consistent test results on this board and the excellent NVIDIA Monitor temperature measurement utility, which is part of the nTune program. The 680i chipset is also one of the better options for Socket 775 CPU overclocking, and it provides great flexibility in our standard cooler tests which overclock to the failure limit with each cooler tested.
NVIDIA Monitor has a drop-down pane for temperature measurement which reports CPU, System, and GPU results. Reviews at this point will concentrate primarily on CPU temperature. In addition to the real-time temperature measurement, NVIDIA Monitor also has a logging feature which can record temperature to a file in standard increments (we selected every 4 seconds). This allows recording of temperatures during testing and play back, for example, of stress test results that can then be examined when the stress tests are completed. There is also the handy reference of speeds and voltages in the top pane to confirm the test setup.
Other components in the cooling test bed are generally the same as those used in our motherboard and memory test bed:
| Cooling Performance Test Configuration | |
| Processor | Intel Core 2 Duo X6800 (x2, 2.93GHz, 4MB Unified Cache) |
| RAM | 2x1GB Corsair Dominator PC2-8888 (DDR2-1111) |
| Hard Drive(s) | Hitachi 250GB SATA2 enabled (16MB Buffer) |
| Video Card: | 1 x EVGA 7900GTX - All Standard Tests |
| Platform Drivers: | NVIDIA 9.53 |
| NVIDIA nTune: | 5.05.22.00 (1/16/2007) |
| Video Drivers: | NVIDIA 93.71 |
| CPU Cooling: | OCZ Vindicator Thermalright Ultra 120 Extreme Thermalright Ultra 120 Scythe Infinity Zalman CNS9700 Zalman CNS9500 CoolerMaster Hyper 6+ Vigor Monsoon II Lite Thermalright MST-9775 Scythe Katana Tuniq Tower 120 Intel Stock HSF for X6800 |
| Power Supply: | OCZ PowerStream 520W |
| Motherboards: | EVGA nForce 680i SLI (NVIDIA 680i) |
| Operating System(s): | Windows XP Professional SP2 |
| BIOS | Award P24 (1/12/2007) |
All cooling tests are run with the components mounted in a standard mid-tower case. The idle and stress temperature tests are run with the case closed and standing as it would in most home setups. We do not use auxiliary fans in the test cooling case, except for the north bridge fan attached to the 680i for overclocking.
Since OCZ provides a small packet of a standard white thermal compound, we tested with a premium silver colored (no silver content) thermal compound we have used in testing coolers that did not include a proprietary thermal compound in the cooler kit.
In our experience the thermal compound used makes little to no difference in cooling test results. This is particularly true now that processors ship with a large manufacturer-installed heatspreader. Our only control on thermal compound is that we use the manufacturer-supplied product if they supply a premium product, or a standard high-quality thermal paste if a premium brand is not supplied.
We first tested the stock Intel cooler at standard X6800 speed, measuring the CPU temperature at idle and while the CPU was being stressed. We stressed the CPU by running continuous loops of the Far Cry River demo. The same tests were repeated at the highest stable overclock we could achieve with the stock cooler. Stable in this case meant the ability to handle our Far Cry looping for at least 30 minutes.
The same tests were then run on the cooler under test at stock, highest stock cooler OC speed (3.73GHz), and the highest OC that could be achieved in the same setup with the cooler being tested. This allows measurement of the cooling efficiency of the test unit compared to stock and the improvement in overclocking capabilities, if any, from using the test cooler.
Noise Levels
In addition to cooling efficiency and overclocking abilities, users shopping for CPU cooling solutions may also be interested in the noise levels of the cooling devices they are considering. Noise levels are measured with the case open on its side and are measured using a C.E.M. DT-8850 Sound Level meter. This meter allows accurate sound level measurements from 35bdB to 130dB with a resolution of 0.1dB and an accuracy of 1.5dB. This is sufficient for our needs in these tests, as measurement starts at the level of a relatively quiet room. Our own test room, with all computers and fans turned off, has a room noise level of 36.4dB.
Our procedures for measuring cooling system noise are described on page seven along with noise results comparing the stock Intel cooler and recently tested CPU coolers to the OCZ Vindicator cooler.
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Wesley Fink - Thursday, April 5, 2007 - link
You make a good point, but I remain concerned about introducing additional noise and cooling variables into the test platform with a variable fan speed PS. In flat out gaming every PS I have seen is running at load conditions. However, your suggestions are certainly "real world" and we will definitley evaluate the impact of one of the "silent idle" power supplies on our total cooler testing. Our goal is to find ways to lower the ambient noise and sytem noise floor in realistic ways to provide a wider db test rangeyacoub - Thursday, April 5, 2007 - link
Yeah exactly. My PC DOESN'T sit at Load settings for its fans. See I actually have them all dynamically controlled by temp and they only spin up when the machine is actually processing heavily enough to warm things up to a level that needs the fans to spin up a bit more to cool effectively.I'm starting to think it's more a matter that most folks don't care enough to quiet their PCs down so they don't realize how much nicer it is to have a quiet PC. This would be why they think it's normal to have a PSU making 40db of noise and thus fans can be 36db of noise and they think that's ok.
My PC (and it's not exactly designed to be totally silent) is inaudible except when I'm gaming or doing heavy work in a program in windows that requires the cpu to load up a lot. I can surf the Internet, type a Word doc, listen to music, or watch a DVD, and it's inaudible unless you put your ear within a foot or two of the case.
(P150 Antec case, Antec True-Power2.0 450w PSU (recently replaced by a Corsair 520w that has a fan that is a tiny bit more audible), SpeedFan, ATiTool, and good configurations are to thank for that. It's even using the retail cooler on my A64 Venice 3200+ and it's overclocked to 2.4GHz and it's still silent because I have the fan on it throttle down to 40% when it's under 40C, which it is most of the time.)
punko - Thursday, April 5, 2007 - link
For me, my wife watches television in the same room that I have the computer. When I'm gaming I use either very low sound or headphones.Noise is an issue, whether at idle, low load, or heavy load.
If anything, I tend to have the CPU and GPU maxed out when I'm on the computer, so the "real world" testing of a complete system underload is the most important sound rating. Idle? don't care, that means I'm not in the room.
What I would love to see is a general guide for those of us planning to build a new rig, and get an idea of what is available in terms of major components for building a quiet (not silent) PC. I am more than well aware that there are specialist sites that do component by component reviews, but I am more interested in the "real world" knowledge of people that assemble and use hundreds of components in various configurations.
Articles like this one help, because the focus the attention on a particular component as part of an overall system.
yacoub - Thursday, April 5, 2007 - link
oh and by "only spin up" i mean "spin up from the level I have them throttled down to" not "spin up from stopped". You never want to throttle fans down to where they stop while the system is on, because there's always the danger they won't spin back up.asdfqwertyuiop - Thursday, April 5, 2007 - link
This article is poor. The SilenX claims are just false, and parroting their marketing BS without adequate testing is unsatisifactory. There are about a dozen fans, including the stock Intel one, all on the same db rating. So in other words, testing was insufficient to establish whether or not the fans are quieter than even the bog-standard Intel one.Accepting SilenX's BS that their fan achieves dramatically more airflow with less noise than anything else available shows excessive credulity.
Aside, what's with tech firms and the product names that sound like they are aimed at 13-year olds? Vindicator??? This is a heatsink, not an assault weapon.
tomoyo - Thursday, April 5, 2007 - link
As stated by quotes from a silentpcreview reader here - http://www.silentpcreview.com/forums/viewtopic.php...">http://www.silentpcreview.com/forums/viewtopic.php...There's so many inaccurate and incorrect commentary in this review that it's utterly amazing it was ever posted. It's obvious the heatsink was designed by scythe and relabeled by OCZ, that's nothing terrible to say since tons of brand names are made by different companies. I'm MOST disgusted by the blatant love of Silenx fans when their specifications on their fans are 100% WRONG. It is physically impossible for their fans to be as quiet as they say, which means they're purely and utterly liars. A company that lies should not be praised like anandtech is doing. I'm surprised they are not using a quiet nmb-panaflo, nexus, or other good fan out there.
And the OCZ powerstream is certainly not one of the quieter power supplies out there. A better comparison psu would be something like a Seasonic or Corsair.
There's plenty of other issues with the writing quality here, but I think these are the most blatant.
amdlive - Thursday, April 5, 2007 - link
What is the true specifications of the fan utilized in this article? If no the specs listed are 100% wrong, then provide the real world results you have. We are waiting and by the way, post a link to your last review.
amdlive - Thursday, April 5, 2007 - link
What is the true specifications of the fan utilized in this article? If you know the specs listed are 100% wrong, then provide the real world results you have. We are waiting and by the way, post a link to your last review.
goinginstyle - Thursday, April 5, 2007 - link
Silent PC Reviews are a total joke. They in no way simulate conditions inside, near, or even remotely in plain sight of a PC. Most of the members over there are elitist wannabes who drink the Chin Kool-Aid and then march off like ants to spread the gospel of lies that are the SPCR test results. Most of their articles are contradictory once you really read them and the computer equipment they use is several generations old. They are not even using equipment that most of us have bought in the last two years and to even consider a P4 and 6800GT as components that stress a power supply is just laughable. The site is one big cluster "F" with most of the recommendations going to their sponsor list. I could not believe some of the asinine comments posted in that topic. Hopefully they wake up and smell the $h!t that is spewing from the writers over there.My issues with the cooling reviews here are the noise levels in the room. They really need to be around 26 to 30dBA to properly test most components in your "real world" test routines. There are a lot of people who probably have rooms at home in that noise range along with components whose base noise levels fall in the same category. I would also like to see how well the units fit on the top three or four selling motherboards along with some power supply reviews.
Wesley Fink - Thursday, April 5, 2007 - link
According to a Noise article at SPCR 26 to 30db is the noise level of a "quiet bedroom at night". 35 to 45 db - our ambient noise is 36db - is the noise level of a "Quiet office or library; Typical PC Subdued". The complete chart is in comments below. We hope to lower noise a bit in a reworked test bed but we are not confident we can get below 30db consisitently.