ARCTIC Accelero Twin Turbo II installed on MSI GTX 670 reference card

[The_Golden_Man]

Here is a little tip,

Even if the Twin Turbo II cools the GPU below 50c in games at very low fanspeeds it could be a smart idea to set the fanprofile to ramp the fans up to 70 - 80% when the temp goes over 40c. This way making sure the rest of the card, VRM's and VRAM's get good airflows. Even at 70 - 80% I can barely hear the Twin Turbo fans over my case fans.

 

[Don Karnage]

I was refering to this one http://www.arctic.ac/en/p/cooling/vga/569/accelero-hybrid.html?c=2182

Looks like it is a little over 2 slots

That sucker retails for 200 bucks and is a huge ripoff

 

[The_Golden_Man]

That sucker retails for 200 bucks and is a huge ripoff

Yeah, that was the one I saw no reason for buying when compared to Twin Turbo II

 

[The_Golden_Man]

Looking at the gigabyte Windforce x3 PCB, it looks rather empty in the front section (left of the GPU). That is the area where the reference GTX 670's have their pvm circuitry. So if you look at that Gigabyte card, the pvm circuitry could have easily been moved to the left of the GPU, also the two RAM chips moved and the PCB cut much shorter.

I actually think the Gigabyte card is based on the reference GTX 680 PCB. I see the soldering tracers for the stacked PCI-E powerconnector also. This only goes to show that the GTX 670 reference is all the PCB that is really needed for these cards. I think the GTX 680 is made longer because it would appear more "High-End". 5-phase power regulation could also have easily fitted on the reference GTX 670 pcb. I also fail to see the need for 5-phase power regulation and 6+8 pin PCI-E power if one cannot even increase vGPU.

GTX 670 has a TDP of 170w. 6+2 Pin PCI-E delivers 150w + 75w from PCI-E lane = 225 Watts. Also, since vGPU cannot be increased it would be impossible to come near 225 Watts. I see that my old GTX 570 reference was rated at 219w TDP, and had 6+2 PCI-E power connection. No wonder so many of those cards burned. Just a tiny overclock would exceed the power delivery system. However, for the GTX 670 it is plenty with 6+2 pin PCI-E connectors (225 Watts).

Also, the Gigabyte Windforce 3x cooler is nowhere near the cooling performance of the AC Twin Turbo http://www.hitechlegion.com/reviews/video-cards/17774?start=10

Reference for comparison

Edit: Here is the picture of the reference GTX 680 PCB. Looks like the same as the Gigabyte 670 Windforce 3x. However, it seems to be missing one power phase from the GTX 680 PCB when compared to the 670 Gigabyte.. ? What's up with that? I though the GTX 680 also had a 5 phase power delivery system?

 

[master_nz]

Just got my Twin Turbo II installed on my Evga 670 reference, and yeah, its like night and day. No more annoying fan hum/grind sound, and load temps dropped...

Almost 30 degrees. Was topping out a bit over 80, now runs in the low 50s. Clock is now boosting to 1110 at stock as it "should."

Seriously poor stock cooling for such an otherwise good card imo.

I considered the Mono version, but everywhere I looked the Twin Turbo II was the same price (got it for $38 from Ncix).

Time to do some overclocking later.

I have the same EVGA reference card as you, what mounting holes and spacers did you use? The manual still hasn't been updated for the twin turbo II.

 

[The_Golden_Man]

I have the same EVGA reference card as you, what mounting holes and spacers did you use? The manual still hasn't been updated for the twin turbo II.

You use the outermost holes on the PCB. Also, If I remember correctly, you can leave the mounting bracket on the cooler, they way it comes. There are 2 sets of spacers, I recollect you have to use the thinnest.

 

[MrMuppet]

Haha, that's massive! Thanks for the thread and pics!

Would twin Twin Turbo II work in SLI? It looks pretty tight from the pics. Even if two would fit, it would defeat the purpose if it was too tight and the upper one was choking for air and had to speed up significantly to cope.

 

[RussianSensation]

Edit: Here is the picture of the reference GTX 680 PCB. Looks like the same as the Gigabyte 670 Windforce 3x. However, it seems to be missing one power phase from the GTX 680 PCB when compared to the 670 Gigabyte.. ? What's up with that? I though the GTX 680 also had a 5 phase power delivery system?

No, both the 670 and 680 reference cards from NV only have 4 VRMs. The Gigabyte GTX670/680 windforce versions have 5.

I remember when GTX670 launched, we kinda narrowed down the top 3 GTX670 cards at that time (In no particular order):

- Windforce 3x
- Asus DCUII
- Galaxy Dual-Fan:

The reference GTX470 also had 4 VRMs and overclocked from 607mhz to 750-800mhz, despite Fermi consuming > 250W of power easily.

I think the GTX680 reference is fine, it's the 670 reference PCB that looks cheap.