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Bowing an Apogee GT?

B

Bop

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Oct 1, 2003
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I've returned to water cooling after two years. I've done my research and it appears that Swiftech is still king with a "bowed" GT. I got the Apogee GT kit for $200 even when it came back in stock at the Egg.

I'll be right at home with this kit as I owned the first APEX Apogee kit. My problem is I don't quite understand what this "bowing" is. What do I need to do to bow my GT?
 
first off ... fuzion is better then gt , gtx bowed is better then fuzion . real world no difference ....

ok gt top has an o-ring in the middle where the intake and outlet are . now by putting bigger o-ring(be very carefull as alittle goes along ways) in the middle (in and out ) that bows the bottom . weird !!!!

intake and outlet are in the middle of the block by putting a bigger o-ring it tends to bow the base very little . by bowing the base you can put more pressure on the core (where it matters) . now , will you see a difference um probly not , unless you mount and remount time and time again to have perfect mounts with the best heat transffer .

simple gt,fuzion,gtx all about the same , no real world difference .... imho

never had a gt only gtx(which i bowed ) and fuzion . what matters more in florida is how hott it is outside then all the bowing in the world ... goodluck
 
As far as seeing a difference in temps with a "bowed" Apogee GT let me digress.

I fold 24/7 with 4 boxen and two are water cooled. One of the boxen has 3/8th inch ID tubes, a MCP220 rad, a MCP350 pump (with stock top), a Micro Rez and, last but not least, a "bowed" Apogee GT. I have two (2) yate loon fans on the rad with a shroud sucking air in. (D12SH-12, with a fan rheostat)

With my ambient temperature roughly 20c taken with an indor/outdoor thermometer and loosely taken with a infared thermometer I noticed about a 3c temperature drop when I installed the Apogee GT with the bigger "O" ring that came with the WB to "bow" it. I may have done a better mount, but I don't think I did.One thing I do know and that's I'm very satisfied with the results :p (temps were taken with Coretemp and SpeedFan)

I'm talkin' folding here and the temp drop both cores, according to winders Task Manager, @ 100%

I used AS5 TIM so the temp may get better after the curing time completes.

I really don't know how much a couple of degree's matter to anyone, but no more trouble than it is to install the "fatter O ring" (four screws, they even included the allen wrench) I see it as a complete "no brainer" not to go ahead and use trhe "fatter O ring" to bow the bottom of the block.

Obviously some people may have a problem with the fact you can NEVER unbow the bottom. (maybe you could lap it flat, I don't know or really care)

Edit: Yeah, I've read many times on different forums about how "super" good the FuZion and the Apogee GTX "bowed" are. Last I read it was kind of a "toss up" to which was better with the quad and then some people didn't like the aluminum top on the GTX..

Heaven forbid, I even read where someone "bowed" the FuZion :eek: I think it has different water jet sizes that improves it's cooling capacity for the quad also ?

 
I just installed a Apogee GT CPU block on my computer, I purchased the block for $35 brand new, the Apogee GTX was $58, and the D-Tek Fuzion was $69 ... for a couple degrees difference it was a no-brainer.

Not to mention the Apogee GT came with MORE things (1/4, 3/8, 1/2 barbs, and fatter o-ring for bowing)!!

Sure the block isn't AS nice looking as the GTX but I'll live with it :)

I *tried* to install the fatter o-ring but I had a hard time keeping it in place while I tried putting the parts back together so I gave up. I'm still testing and tweaking things I'll have a new post soon with pictures/results/thoughts :)
 
Temps between the three are almost indistinguishable, but the Fuzion has significantly less pressure drop between the inlet and outlet. The GT is pretty high (I think higher than the standard), and the GTX is higher still. I'd take the Fuzion, hands down- in fact, I've bought a few over the past year or two. :)
 
mavalpha said:
Temps between the three are almost indistinguishable, but the Fuzion has significantly less pressure drop between the inlet and outlet. The GT is pretty high (I think higher than the standard), and the GTX is higher still. I'd take the Fuzion, hands down- in fact, I've bought a few over the past year or two. :)
Click to expand...

I agree with the pressure drop thing, I've read where the Fuzion was one of the best "low flow" block on the market. You're right about the temps between them being almost indistinguishable (the GT and Fusion), I think it's 1c or so degrees in favor of the Fuzion vs the GTX, 1c or so degrees difference doesn't really matter to most people, but there are extreme OC'ers out there that are happy with just a 1/2c degree difference. (I've got great respect for those pioneers).

Myself, I just have a CPU block in both my loops ATM. If the urge strikes me to install a GPU water block in either loop or both, I'm pretty sure either my MCP350 or MCP655 will be sufficient to overcome any resistance from either one of my Apogee GT's. Your're right, the Apogee GT is not that pretty, but it does work and it's cheaper than some of the alternatives. (I do love my Apogee GT's) :D)

If you had some "no name" aquarium pump or a low head pressure water pump the pressure thing would be more important, especially if you had several water blocks on your loop (ie CPU WB, GPU WB, NB WB, SB WB, HD WB, RAM WB, etc) :rolleyes::D

I do understand, from reading the EOC forum, that the Fuzion has a way to "bow" it and it has special jets to make it more efficient for cooling quads. Sounds cool to me, but ATM I don't have a quad or a Fuzion WB. :p

 
I got my setup up and running... not much of an improvement over a lapped TRUE.

My temps are much more even across the cores, usually 1-2C between cores... 3C diff max.

I was able to bow the GT, quite a bugger to get the o-ring in.

At 3.8ghz with 1.488v my temps reach 70-78C under load after 30 mins : / Ambient temp is about 22C.

EDIT: The thermal paste I used was junk, I remounted it with AS5 using the line method and my temps are in the 50s range under load!!!! :D

Pic:

DSC00158.jpg
 
Man, that's a beautiful boxen Bop :eek:

Hey, for just a offa' the wall question, does it matter at all what kind of orientation you have on a GT? :confused: I mean other than the inlet hose pressure and outlet hose return obviously :rolleyes:.

You know, like horizontal or vertical or is the routing of the hoses more important? (which takes precedence and I don't mean upside down) :confused:

PS: You know the ole' sayin' "it never rains, unless it pours". I had 2x of my 24/7 folding boxen quit working at the same freakin' time. (1x HD and 1x mobo) I got the HD one up no problemos' (Linux doesn't need a big drive, I had a couple of old 20 MB 7200 rpm IDE's layin' around), but still waiting for a mobo for the other. (hopefully in the very near future, I'm currently savin' for a quad and more RAM :rolleyes:) Sh*tzzzz.. :mad:


 
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