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Asus 7950 DC2-V2 the best 7950? - Page 2

post #11 of 21
If you want the best one go for HIS ICEQ 7950 x2 smile.gif
post #12 of 21
Quote:
Originally Posted by KingT View Post

Quote:
Originally Posted by stubass View Post

hey, cheers for the info on the v1 and a fix smile.gif + REP jusnt what i have been looking into. Where did you get the X shape plate from?

On HD7900 series hole spacing is 54 mm so you can use X plate from HD6900 series or 4800 series AMD cards their hole spacing is 53.2mm or 53mm for HD4800 series.

I'm using one from HD4800 or HD6900 (dunno exactly as they are identical) series and it works great. it's a tight fit but can be used (also HD6800 and HD5800 series have 53mm hole spacing).

You can also with a power drill make holes on X plate a little bigger (widen the holes towards the ends on X plate) so you make up for that hole spacing difference to make it very comfort fit.

Also make sure that you use 1.5 - 2mm thick plastic washers under the X plate holes to increase mounting pressure and to maximize cooling performance.

Also you need original screws from HD4800, HD5800, HD6800 or HD6900 series cards to be able to mount the cooler with X plate (original Asus screws would not work).

I have fixed mine and it works good.


CHEERS..

okies sweet. cheers.gif for all the info
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post #13 of 21
Quote:
Originally Posted by KingT View Post

Quote:
Originally Posted by stubass View Post

well V1 had a lot of issues with cooling as your probably aware. V2 was suppose to fix this but i beleive they locked the voltage fairly low so not the best overclocker. mine clocks pretty good but i still need to do the fix on the cooler and isnt voltage locked.

i wouldnt say it is the best card at all. i would look at something like sapphire boost cards, msi or GB as well over the asus in the 7950 series.

I have Asus HD7950 DC2T V1, and personally I would stay away from Asus DC2 cards.

V2 should have fixed cooler issue, V2 comes with identical cooler to HD7970 DC2, also V2 comes with CUSTOM PCB from Asus (8 Phase power design).

But still I would not spend my money on it.

The V1 design flaw is in the mounting screws, not coller itself as they are too long and cannot be tightened enough.

Anyway I have fixed my DC2T V1 cooling issue by installing a X shaped backplate (which usually comes on reference AMD cards).
Warning: Spoiler! (Click to show)
2uh67vt.jpg

Now my temps @ stock 900/1250MHz , stock fan are 55C max in games and benches like Heaven, 3DMark 11 etc.

@ overclocked 1050/1750MHz, fan hits 36% max, my GPU temp is under 56C in games and benches.


CHEERS..

Wow, dat temps. How can you say stay away if you are at 56*C on an overclock? What voltage, by the way? Because every 7950 nowadays has different stock voltage, I think AMD has told all the cards to go 'boost' 925mhz@1.25v, which is quite silly.

I'm aware of the V1 issues, but I'd be buying a V2. And I don't mind a few washers behind the GPU, worst case scenario.

Also, as I understand, the V2 uses 6 heatpipes, whereas the V1 uses just 5. So not the same cooler.
Quote:
Originally Posted by Tonza View Post

Quote:
Originally Posted by Belial View Post

Yea I have a UD5h, there is 3 slots between the 2 GPU slots:

Unfortunately they are gonna be sandwiched with that motherboard, in other words top card will turn into volcano.

I imagine the stronger cooler of the Asus DC2 will minimize that, compared to 2 x dual-slot 7950s with weaker coolers, smaller and louder fans, and with a bit more space in between them. I have tons of case air flow with 8 fans (4 are 140mm).
Quote:
Sapphire and Gigabyte have proven that you don't need 3 slots to cool the 7950 to cool temperatures, the Sapphire cooler is the coolest and the quietest..

Sorry if I didnt make it clear, but I currently own a Sapphire Dual-X 7950 3L Boost, and it's a piece of crap. At stock 925mhz@1.25v, it goes well over 80*C on 100% fan in a rather cool room (again, with 8 case fans, open side panels, and a ceiling fan and windows open).

What I'm looking for in a 7950:
  • Core Voltage
  • Memory Voltage
  • Hynix RAM instead of Elpida
  • VRM Temp sensor is nice, better phases is nice
  • A CHiL voltage controller is better than the no-name one

The Dual-X has core voltage, but it doesn't have memory voltage, has elpida, no vrm sensor, it's missing a phase, and using a no-name controller. The only positive to the Sapphire 7950 dual-x is core voltage control, which is something that the Gigabyte does NOT have.

Oh, by the way, the sapphire cooler, the vapor-x, takes up 3 slots. It's hardly the coolest and quietest either, that's an absurd claim to make, and total misinformation. You also have to take into account FAN RPM or speed/sound, and you'll find colors like PowerColors PCS 7950 is warmer, but significantly quieter. They all pretty much cool the same, the Sapphire Dual-X is better than the MSI Twin Frozr II, and similar in performance to the Gigabyte's 3 fans with a worse cooler. The Asus Dc2 is by far the best cooler from what I've read, followed by the Vapor-X 3 slot cooler. They are all going to be the same if they are 2 slot with ~80mm fans.

By the way, I am aware that the 7950 is just a hot card and that the cooler of the dual-x is rather strong, but I'm looking for a card with core, mem voltage, and hynix ram, and I'd prefer one with a better cooler.
Edited by Belial - 5/13/13 at 12:24pm
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post #14 of 21
Quote:
Originally Posted by Belial View Post

Also, as I understand, the V2 uses 6 heatpipes, whereas the V1 uses just 5. So not the same cooler.
I imagine the stronger cooler of the Asus DC2 will minimize that, compared to 2 x dual-slot 7950s with weaker coolers, smaller and louder fans, and with a bit more space in between them. I have tons of case air flow with 8 fans (4 are 140mm).

People do run Dual Trislot DC2 card configs, key is having fan deliver cool air flow directly to the top card, otherwise it will mostly consume hot exhaust of the bottom card and run very hot:




Edited by sherlock - 5/13/13 at 12:29pm
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post #15 of 21
Quote:
Originally Posted by Belial View Post

Wow, dat temps. How can you say stay away if you are at 56*C on an overclock? What voltage, by the way? Because every 7950 nowadays has different stock voltage, I think AMD has told all the cards to go 'boost' 925mhz@1.25v, which is quite silly.

I'm aware of the V1 issues, but I'd be buying a V2. And I don't mind a few washers behind the GPU, worst case scenario.

Also, as I understand, the V2 uses 6 heatpipes, whereas the V1 uses just 5. So not the same cooler.
I imagine the stronger cooler of the Asus DC2 will minimize that, compared to 2 x dual-slot 7950s with weaker coolers, smaller and louder fans, and with a bit more space in between them. I have tons of case air flow with 8 fans (4 are 140mm).

I use 1.075mV set in MSI aAfterburner for 1050MHz, 1.092V for 1070MHz and 1.113V for 1100MHz.

My max stable memory OC is 1850MHz @ stock 1.6V, but I have it @ 1750MHz for 24/7 operation (Hynix memory ICs).

But V1 card does not have any VRM passive cooling so going over 1.12V causes instability for long term OC, I can bench easily @ 1150MHz and 1.14V.

Yes V2 uses identical cooler to Asus HD7970 DC2, it has 6 heatpipes, but those are 6mm pipes, V1 uses 5 thicker 8mm pipes so it's not inferior to V2.

As matter of fact I have seen V2 test in Crysis 3 on YT and max GPU temp @ stock 900/1250Mhz is 65C, my card also @ stock 900/1250MHz, in Crysis 3 has max 55C GPU temp (fan @ auto , goes max to 17% = DEAD SILENT).

So V1 by my experience has better cooling because of thicker heatpipes.


Still I would stay away from HD7950 DC2 cards if you're not keen into modding cooler mounting like I was.


CHEERS..
Edited by KingT - 5/13/13 at 1:27pm
     
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post #16 of 21
Quote:
But V1 card does not have any VRM passive cooling so going over 1.12V causes instability for long term OC, I can bench easily @ 1150MHz and 1.14V.

WHAT?! No way! Ouch!
Quote:
Yes V2 uses identical cooler to Asus HD7970 DC2, it has 6 heatpipes, but those are 6mm pipes, V1 uses 5 thicker 8mm pipes so it's not inferior to V2.

Ah. Maybe the 6 pipes are cheaper, that's why. And your temps are probably so low because you run such a low voltage...
Quote:
Still I would stay away from HD7950 DC2 cards if you're not keen into modding cooler mounting like I was.

First off, I am very keen to modding, i delidded 3 ivies and I dont mind modding at all. I modded my case, my fans, my heatsinks, my everything. I love mod, for me its an plus to buy something, not a con.

That said, i thought the Dc2 fixed the issues with the Dc1? So why would you warn against the Dc2?

Rep upon answer thumb.gif
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post #17 of 21
Quote:
Originally Posted by Belial View Post

WHAT?! No way! Ouch!
Ah. Maybe the 6 pipes are cheaper, that's why. And your temps are probably so low because you run such a low voltage...
First off, I am very keen to modding, i delidded 3 ivies and I dont mind modding at all. I modded my case, my fans, my heatsinks, my everything. I love mod, for me its an plus to buy something, not a con.

That said, i thought the Dc2 fixed the issues with the Dc1? So why would you warn against the Dc2?

Rep upon answer thumb.gif

Both cards are DC2, there's no DC1.

Difference is in revision, the first Asus HD7950 DC2 is V1 (HD7950-DC2T-3GD5), later newer model is V2 (HD7950-DC2T-3GD5-V2).

I have V1, when ti works properly then it's great card, but most of Asus HD7950 DC2 and HD7970 DC2 cards had problems with cooling, with broken VRM temperature sensors etc.

That's why I would stay away from Asus DC2 cards, I have bought this one because it was a great price and I knew how to fix it.

But if you decide to buy a Asus HD7950 DC2 make sure that it is a V2 model.


CHEERS..
     
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post #18 of 21
oh sorry, typo, yes, when I said dc1/dc2, I meant V1 vs V2. I am aware of the differences, ie that they are 2 different revisions. Newegg is (or was, oos atm) selling just the DC2 V2, so that seemed pretty straightforward.

I would have no problem mod fixing my dc2 if there was an issue. If I bought it, I would know for 100% certainty that it's a V2 version.

So please, now that I've fixed my typo, be more clear - is there any issue with buying the 7950 DC2 V2? Newegg lists it as the Dc2-V2, they make clear it's the 2nd version. Does the V2 have:

  • Core Voltage
  • Memory Voltage
  • Hynix RAM instead of Elpida
  • VRM Temp sensor is nice, better phases is nice
  • A CHiL voltage controller is better than the no-name one
  • Passive VRM cooling, since you say V1 doesnt have it (really?) (Plate or dedicated heatsinks, either is fine with me)
  • ANY ISSUES
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Colonial Blue Paracord Sleeving 
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post #19 of 21
Quote:
Originally Posted by Belial View Post

oh sorry, typo, yes, when I said dc1/dc2, I meant V1 vs V2. I am aware of the differences, ie that they are 2 different revisions. Newegg is (or was, oos atm) selling just the DC2 V2, so that seemed pretty straightforward.

I would have no problem mod fixing my dc2 if there was an issue. If I bought it, I would know for 100% certainty that it's a V2 version.

So please, now that I've fixed my typo, be more clear - is there any issue with buying the 7950 DC2 V2? Newegg lists it as the Dc2-V2, they make clear it's the 2nd version. Does the V2 have:

  • Core Voltage
  • Memory Voltage
  • Hynix RAM instead of Elpida
  • VRM Temp sensor is nice, better phases is nice
  • A CHiL voltage controller is better than the no-name one
  • Passive VRM cooling, since you say V1 doesnt have it (really?) (Plate or dedicated heatsinks, either is fine with me)
  • ANY ISSUES

I don't know does V2 have any issues, I have seen a couple of owners who have V2 ad it runs cool out of the box.

Some say that V2 are VOLTAGE LOCKED, I don't know that for sure.

V2 comes with Hynix memory IC and Digi+ voltage controller (rebranded Chill)

V2 has passive cooling in VRM and memory.


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Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
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post #20 of 21
From what I understand, it's only the 7970 DC2 v2 that's voltage locked. I'll quadruple check, again, though.
Quote:
V2 comes with Hynix memory IC and Digi+ voltage controller (rebranded Chill)

V2 has passive cooling in VRM and memory.

ahhh cool. now hopefully newegg has it in stock before my sapphire gets to them, otherwise i'll have to go with just getting a replacement on the crap card.
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Hard DriveCoolingCoolingCooling
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Hard DriveCoolingOSMonitor
Samsung 830 128gb Corsair H110 w/4x 140mm Yate Loon High Blues W7 x64 Ultimate Yarrgh Matey Dell U2312HM Matte IPS 1080p 
MonitorMonitorKeyboardPower
Sanyo DP19640 18.5" 768p KDS Rad-7xp 1024p CM Storm Quickfire Rapids Brown Rosewill Capstone 750 
CaseMouseMouse PadAudio
Bitfenix Shinobi Modded CM Storm Spawn Steelseries Diablo 3 2 set CD Speaker + Big Sub 
Other
Bitfenix Recon Fan Controller Moded 
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Delidded i7-3770K 5GHz@1.499 Gigabyte Z77X-UD5H 1.1 Sapphire Dual-X 7950 3L Boost 4x2GB Mushkin Ridgeback 2200mhz 8/11/8/27 1.75v... 
Hard DriveCoolingCoolingCooling
Intel X25-M 80GB SSD NH-D14 SE2011 Noctua 120/140/140 Fans 3 x Yate Loon Mediums (Petras) 2 x NZXT Havik 140mm Fans 
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Hax'd W7 Ultimate 64-bit Sanyo DP19640 19'' KDS Radius Rad-7xp 17'' Ducky 1087 MX Brown 10keyless 
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Rosewill Capstone 550w Modular NZXT Source 210 w/Modded Window Razer Deathadder 3.5G Steelseries Blizzcon D3 
AudioAudioOtherOther
Phillips FW-C250 2 Speaker Set w/3 CD Changer JBL Sub 6 Subwoofer NZXT Sleeved LED Strip 1m Blue NZXT Sentry 2 Fan Controller 
Other
Colonial Blue Paracord Sleeving 
CPUMotherboardGraphicsRAM
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Hard DriveCoolingCoolingCooling
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