Skinnee Labs - GTX480 Block Round-Up (working thread)

Quote:

---

Originally Posted by skinnee

I'm trying to wrap it all up this weekend, I want to be done as well. :)

a little piece of what I just finished...
http://skinneelabs.com/assets/images...X480_pdrop.png

---

Can you explain why you proclaim lower to be better? This seems like an assumption on your part.

Quote:

---

Originally Posted by resident1509

Can you explain why you proclaim lower to be better? This seems like an assumption on your part.

---

In a way, lower could not necessarily mean 'better'... those of you gifted with endless pumping power care less about restriction then those on a single or dual pumps.

With any fixed amount of pumping power, lower restriction equates to higher flowrate.

Quote:

---

Originally Posted by Section8

I second that.



Yes a triple does in fact work just fine. I have a HWLabs GTX 480 but have yet to swap it out with my PA 120.3 yet in part because I don't think my temps will get much better. With my cards at 850/2100 at stock voltage they idle at 33C and fully loaded never get over 55C.

---

That's incredible temps for three overclocked GTX 480's pushing more than 250 Watts per card! :eek: Have you tripped any circuit breakers with your Silverstone 1500W power supply?

-Systemlord

Quote:

---

Originally Posted by Systemlord

That's incredible temps for three overclocked GTX 480's pushing more than 250 Watts per card! :eek: Have you tripped any circuit breakers with your Silverstone 1500W power supply?

-Systemlord

---

Funny you should ask. It kept tripping the 15A circuit breaker I had in the breaker box so I just made a trip to the home depot and bought a bunch of supplies to beef up the wiring going to my office including a 20A circuit breaker.

Quote:

---

Originally Posted by Section8

Funny you should ask. It kept tripping the 15A circuit breaker I had in the breaker box so I just made a trip to the home depot and bought a bunch of supplies to beef up the wiring going to my office including a 20A circuit breaker.

---

The are many reviewers and people that have encountered the same issues tripping their 15A circuit breakers, most American homes only have 15A circuit breakers in the bedrooms, studies and/or dens. It's more common than you might think.

-Systemlord

Quote:

---

Originally Posted by Systemlord

The are many reviewers and people that have encountered the same issues tripping their 15A circuit breakers, most American homes only have 15A circuit breakers in the bedrooms, studies and/or dens. It's more common than you might think.

-Systemlord

---

So after all there are some upsides living in the old world ;)

Quote:

---

Originally Posted by skinnee

I'm trying to wrap it all up this weekend, I want to be done as well. :)

a little piece of what I just finished...
http://skinneelabs.com/assets/images...X480_pdrop.png

---

Quote:

---

Originally Posted by Systemlord

What flow rates are considered attainable in an ideal low restrictive loop?

---

Skinnee, I am sure that the above question echoes among many other users.

May I suggest that you superimpose the PQ curves of the 350/355 and 655 on your graph? This would give users an accurate idea as to the flow performance enveloppe. You could do this relatively painlessly with photoshop. If you are short of time, and with your permission, We'll be happy to do this for you.

This is why I am looking at buying a 2000v+ bbu b/c I know that in the future I am going to need 1500W+ support anyways. Now if only it was not 120lbs...

Good to know the temps for the triple sli, I bet you get some great scores and fps on that beast!

Quote:

---

Originally Posted by gabe

Skinnee, I am sure that the above question echoes among many other users.

May I suggest that you superimpose the PQ curves of the 350/355 and 655 on your graph? This would give users an accurate idea as to the flow performance envelope. You could do this relatively painlessly with photoshop. If you are short of time, and with your permission, We'll be happy to do this for you.

---

Yeah, system flow rate is one of those topics that comes up continually, and I have loop flow rate numbers the data table for each block. Every block stayed above the 1GPM mark, which for me is the low side of where I personally aim to keep flow rates.

Yeah, I'll get another chart with 355 and 655 PQ overlayed... but don't have 350 numbers. I'm on my laptop atm, and the Excel workbook just kills this machine with all of the linked workbooks.

Quote:

---

Originally Posted by Waterlogged

Hm. . .and performance is inverse of flow rate. :stick::para::wasntme:

---

if that was true, the bitspower block got second.

If thats true, then 2012 is really coming to an end.

I'm running 3 GTX470's and a GTX480 (so 4 Fermi's alltogether) off one PA120.3 temps top 55/60°C with ambient around 30°C
Thats 3 Aquagrafx and 1 EK block.

Quote:

---

Originally Posted by skinnee

Yeah, system flow rate is one of those topics that comes up continually, and I have loop flow rate numbers the data table for each block. Every block stayed above the 1GPM mark, which for me is the low side of where I personally aim to keep flow rates.

Yeah, I'll get another chart with 355 and 655 PQ overlayed... but don't have 350 numbers. I'm on my laptop atm, and the Excel workbook just kills this machine with all of the linked workbooks.

---

Great! adding the pump PQ curves will really give an instantaneous view to ppl who are familiar with graphs. Thanks Cam, and sorry if it's more work for you, but as I said, if there is anything you need, we'll be happy to lend a hand.

with Dynamic Head Pressure from the D5-S5 with EK V2 Top (Top Outlet) and the DDC3.2 with XSPC V3 top.
http://skinneelabs.com/assets/images...480_pdrop2.png

Quote:

---

Originally Posted by NaeKuh

if that was true, the bitspower block got second.

If thats true, then 2012 is really coming to an end.

---

I posted that to try and stir up a bit of trouble, why is it your the only one to bite? :rofl::p:

Quote:

---

Originally Posted by skinnee

with Dynamic Head Pressure from the D5-S5 with EK V2 Top (Top Outlet) and the DDC3.2 with XSPC V3 top.
http://skinneelabs.com/assets/images...480_pdrop2.png

---

I don't know where to begin to understand the two gray lines? :confused: Neither pumps can go past 2.3GPM so I'm :confused:

-Systemlord

Quote:

---

Originally Posted by Systemlord

I don't know where to begin to understand the two gray lines? :confused: Neither pumps can go past 2.3GPM so I'm :confused:

-Systemlord

---

Where each gray pump curve meets each respective pressure drop curve, that will be your approximate flow rate for that water block and pump setup.

For example, where the DDC3.2 w/ XSPC V3 top curve meets the the EK FC480GTX curve, you get an approximate flow rate of 2.5GPM.

Also, the pumps can and will go past 2.3GPM with the appropriate pump top.

Quote:

---

Originally Posted by ilal2ielli

Where each gray pump curve meets each respective pressure drop curve, that will be your approximate flow rate for that water block and pump setup.

For example, where the DDC3.2 w/ XSPC V3 top curve meets the the EK FC480GTX curve, you get an approximate flow rate of 2.5GPM.

Also, the pumps can and will go past 2.3GPM with the appropriate pump top.

---

I don't know how the DDC3.2 18W with XSPC V3 top compares to a DDC3.25 18W with an EK X-Top V2, but is the flow rate for just the VGA block itself or a full system with rad, res etc? Thanks for the explanation. :)

-Systemlord

the DDC3.2 is 18w as well afaik, i think you're thinking of the 10w DDC3.1. I think the flow rate/pressure drop is just for the block itself...

I'm dying over here skinnee! I really need those results... I'm about to pull the trigger on a koolance block and need to know whether I'm better off buying a DD instead.

Quote:

---

Originally Posted by ilal2ielli

*snip*

---

:up:

Quote:

---

Originally Posted by Systemlord

... but is the flow rate for just the VGA block itself or a full system with rad, res etc?

---

That would be just the block and pump. You're going to have additional restriction in your loop with a radiator, tubing and so on... but blocks are the most restrictive component in your loop.

For instance, The PQ chart shows the EK block at 2.5GPM with a D5-S5/EK V2 Top, but our loop flow rate for our test loop was 1.74GPM with radiator, tubing, and QDC's. Each component brings restriction to the loop.

Oh yeah, and we used a DDC3.2 for the test loop, not a D5. :)

so far . . .Danger Den FTW?

Quote:

---

Originally Posted by skinnee

:up:



That would be just the block and pump. You're going to have additional restriction in your loop with a radiator, tubing and so on... but blocks are the most restrictive component in your loop.

For instance, The PQ chart shows the EK block at 2.5GPM with a D5-S5/EK V2 Top, but our loop flow rate for our test loop was 1.74GPM with radiator, tubing, and QDC's. Each component brings restriction to the loop.

Oh yeah, and we used a DDC3.2 for the test loop, not a D5. :)

---

It's nice to know that the blocks are the most restrictive component because some of those blocks are quite restrictive, makes me rethink my purchase of my 4x120 GTX480 radiator being on the restrictive side!

Quote:

---

Originally Posted by DarthBeavis

so far . . .Danger Den FTW?

---

Looking at the flowcharts, I'd say hell yeah. Now let's just wait calmy for Skinnee to give us the final results....

Aw hell, I can't wait! Skinnee, we needz them :eek::D.

the flow shows flow....:D temps show temps..

Quote:

---

Originally Posted by Systemlord

I don't know how the DDC3.2 18W with XSPC V3 top compares to a DDC3.25 18W with an EK X-Top V2

---

The DDC 3.25 is actually 20w max according to Laing's specs, not 18w as the resellers list.

Quote:

---

Originally Posted by justin.kerr

the flow shows flow....:D temps show temps..

---

Take what we can get. We can call Danger Den Flo ridah (which I like cause I have to fly to Miami in a couple weeks for the sole purpose of doing an insane water-cooled build).