AkG
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Cooling Performance
GPU Cooling Performance
For this test we stressed the core of the GPUs with 3dMark06. This was accomplished by re-running it continuously for 30 minutes with resolution of 1600x1200 and 2xAA. For this series of tests an Asus 8800GT Top (which we previously reviewed), an XFX 7300GT, and a eVGA 7900GTX were used. This way would could see how various cards would be effected by the Stack Effect. In the case of the 8800GT this card uses a single bay cooling solution which sucks air in from around the card and then expels it back around its immediate area. The 7900GTX is a dual slot cooling solution which sucks in air and ejects the hot air to the outside. The 7300GT is a passively cooled card and relies heavily on internal air movement to stay cool. Temperature readings were taken from Rivatuner.
In the first round we paired the Raven up against an CM ATCS 840 with its optional GPU cooling box attached. A Noctua NF-P12-1300 was used to suck air from around the GPU card area and expel it away from the ATCS’s back. In this instance the ATCS 840 and the RAVEN were within in 1 degree of each other with both the 7900GTX and 8800GT (thus within in the error of probability) and thus a tie. However, the passively cooled 7300GT was cooler in the CM ATCS than the Raven by a good two degrees.
While on the surface this does not sound very favorable to the Raven the ATCS 840 does cost significantly more than it and both these cases were easily the coolest run cases we have come across. One could also argue the active cooling of the ATCS 840 is not a fair example as it is a external option which not only ruins the looks of the case but also makes a long case even that much longer and unwieldy.
Due to this controversial nature we reran the tests of the ATCS 840 but this time without the optional external GPU cooling attachment in place. All other fans where of course the standard 230mm fans which come with this unit. This time around the difference was significant, with the Raven easily besting the CM. The 7900GTX was 4 degrees cooler under load, the 8800GT was about the same and the real winner was the 7300GT which was a staggering 6 degrees cooler. Passively cooled cards simply love this case.
Cards which suck in “fresh” air and exhaust it out the back will benefit from the RAVEN but we think the real winner would be in SLI, multi card SLI or especially multi-GPU card setups like the 4870x2. These cards not only run hot because the amount of fresh air is extremely limited by their close proximity to each other (and the top card basically sucks in the hot air which has radiated off the top of the bottom card). In these instances he Raven would be in its element. Best of all you would not need to stick anything on the outside of your case to do it.
CPU Cooling Performance
In order to really show how good or bad the Raven's potential is with regards to CPU cooling, and more importantly show how well the Stack Effect works, we overclocked our Q6600 to 3.4GHZ and ran loads on both the 8800GT GPU and CPU for a full 30 minutes. After running these tests on the Raven we then compared the results to our ATCS 840 under the same loads, without its optional GPU cooling box attachment in place.
Recorded temps were as reported via CoreTemp's "Temp Log". Average load temps were taken after 30 minutes of running Prime95 v25.4 “small fft” and are taken directly from CoreTemp’s temperature text file. Excel was used to average the results of all cores.
As you can see, the numbers do speak for themselves and boy do they ever say a mouthful. Once again the Raven's Stack Effect setup has proven to be a very efficient design. Like it or loath it you have to respect any piece of kit which can not only talk the talk but walk the walk. Sure, the Raven may have funky looks but with results like these it may just endear itself to even its biggest detractors.
Cooling Performance
GPU Cooling Performance
For this test we stressed the core of the GPUs with 3dMark06. This was accomplished by re-running it continuously for 30 minutes with resolution of 1600x1200 and 2xAA. For this series of tests an Asus 8800GT Top (which we previously reviewed), an XFX 7300GT, and a eVGA 7900GTX were used. This way would could see how various cards would be effected by the Stack Effect. In the case of the 8800GT this card uses a single bay cooling solution which sucks air in from around the card and then expels it back around its immediate area. The 7900GTX is a dual slot cooling solution which sucks in air and ejects the hot air to the outside. The 7300GT is a passively cooled card and relies heavily on internal air movement to stay cool. Temperature readings were taken from Rivatuner.

In the first round we paired the Raven up against an CM ATCS 840 with its optional GPU cooling box attached. A Noctua NF-P12-1300 was used to suck air from around the GPU card area and expel it away from the ATCS’s back. In this instance the ATCS 840 and the RAVEN were within in 1 degree of each other with both the 7900GTX and 8800GT (thus within in the error of probability) and thus a tie. However, the passively cooled 7300GT was cooler in the CM ATCS than the Raven by a good two degrees.
While on the surface this does not sound very favorable to the Raven the ATCS 840 does cost significantly more than it and both these cases were easily the coolest run cases we have come across. One could also argue the active cooling of the ATCS 840 is not a fair example as it is a external option which not only ruins the looks of the case but also makes a long case even that much longer and unwieldy.
Due to this controversial nature we reran the tests of the ATCS 840 but this time without the optional external GPU cooling attachment in place. All other fans where of course the standard 230mm fans which come with this unit. This time around the difference was significant, with the Raven easily besting the CM. The 7900GTX was 4 degrees cooler under load, the 8800GT was about the same and the real winner was the 7300GT which was a staggering 6 degrees cooler. Passively cooled cards simply love this case.
Cards which suck in “fresh” air and exhaust it out the back will benefit from the RAVEN but we think the real winner would be in SLI, multi card SLI or especially multi-GPU card setups like the 4870x2. These cards not only run hot because the amount of fresh air is extremely limited by their close proximity to each other (and the top card basically sucks in the hot air which has radiated off the top of the bottom card). In these instances he Raven would be in its element. Best of all you would not need to stick anything on the outside of your case to do it.
CPU Cooling Performance
In order to really show how good or bad the Raven's potential is with regards to CPU cooling, and more importantly show how well the Stack Effect works, we overclocked our Q6600 to 3.4GHZ and ran loads on both the 8800GT GPU and CPU for a full 30 minutes. After running these tests on the Raven we then compared the results to our ATCS 840 under the same loads, without its optional GPU cooling box attachment in place.
Recorded temps were as reported via CoreTemp's "Temp Log". Average load temps were taken after 30 minutes of running Prime95 v25.4 “small fft” and are taken directly from CoreTemp’s temperature text file. Excel was used to average the results of all cores.

As you can see, the numbers do speak for themselves and boy do they ever say a mouthful. Once again the Raven's Stack Effect setup has proven to be a very efficient design. Like it or loath it you have to respect any piece of kit which can not only talk the talk but walk the walk. Sure, the Raven may have funky looks but with results like these it may just endear itself to even its biggest detractors.
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