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Gigabyte GTX470 using reference GTX 480 PCB  

post #1 of 35
Thread Starter 
Hi, tomorrow i'm getting Gigabyte GTX470OC rev2 video card and just recently i found out that it's using reference GTX480 PCB with 6+8pin PCI-E power connections
Thats weird,because GTX 470's reference PCB looks much different compared to GTX480's one and it uses 6+6pin power connectors.
The question is,did Gigabyte took a GTX480 and flashed it with BIOS,to lock some ''stuff'' in it and sell it as GTX470?
Or it's a GTX480 PCB, but GPU itself is GTX470 with laser cut SM clusters and physically missing a few memory chips?

Here's the back of GB GTX470oc rev2.0 PCB :


And here is the shot of Reference GTX480 PCB:
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post #2 of 35
The 470 is not unlockable.
post #3 of 35
They likely are using a different PCB because the 480 is longer
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post #4 of 35
The upper left hand corner of the PCB back does not really tell much.

I am almost certain it still uses two 6-pin PCIe connectors, just as the reference.

Evidence:
1. The user manual of this card (GV-N470OC-13I rev 2) says it uses two 6-pin PCIe (page 7)
Link:http://download.gigabyte.us/FileList...c%29-13i_e.pdf

2. This review shows two 6-pin PCIe connectors (see pic below).
Link:http://www.tweaktown.com/reviews/347...ard/index.html
post #5 of 35
Thread Starter 
I forgot to upload these photos of GB GTX470OC rev.2 :

and



These screenshots are taken from newegg.com

It physically have those 6+8pin connections...atleast in these photos.

Here's newegg.com link for GB GTX470oc rev.2 :
http://www.newegg.com/Product/Produc...scrollHelpful1 (Read feedback)

windfire,i think that user manual from Gigabyte does not include gtx470 rev.2
GTX470SOC PCB layout is much different from reference GTX470 and GTX480.

This version of GTX470 is very weird to say at least
Edited by EwX - 1/5/11 at 5:56am
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post #6 of 35
They design their own PCB, with different capacitors and a more durable build.. They use the same concept as the Ultra Durable line of motherboards with the 2oz copper.

The OC & SOC versions are supposed to be hand picked gpu's, they use the ones that run the coolest with the least amount of voltage...
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post #7 of 35
No one is addressing his question. That card is definitely built off a 480 PCB.
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post #8 of 35
Yes, the newegg photo does show 6+8 pin PCIe connectors. And, there is 1 owner wrote a review of it and did mention 6+8 pin.

So, I suppose the Gigabyte site is wrong then. The manual in my link above is for (A) but is probably not updated to rev 2 even though the manual is downloaded within (A)'s page.

And, if you compare newegg photos of:
(A) GV-N470OC-13I rev2 GTX470 Ultra Durable VGA series and
(B) GV-N470SO-13I GTX 470 Superclocked series and
(C) GV-N480SO-15I GTX480 Superclocked series,
you can see the capacitor layouts (see pic below for A) at the end are different.

So, perhaps this (A) is a non-reference design by Gigabyte.
post #9 of 35
Thread Starter 
Look at this :
Gigabyte GTX480 rev1.0 :

vs
Gigabyte GTX470OC rev2.0 :

The same capacitor layout..

So, it really looks like Gigabyte took reference GTX480 PCB and put on Windforce 3x cooler on it. Then labeled the card as GTX470OC rev.2
Tomorrow i'll know for real how it all looks like.
I do hope that Gigabyte for profit reasons, took unsold GTX480's and by just modified BIOS, flashed some 480's into GTX470 and marketed them as GTX470 rev.2 with non-reference cooler. This would mean GTX470->GTX480 unlock, but TBH, i doubt it's like that
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post #10 of 35
Looking at the pics, I'd say there's at least a small chance it may indeed actually be a 480 flashed to a 470, ala the 465 black pcb cards, and may be unlockable.

Looking forward to your results when you try
    
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