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Sapphire Reference 7970 FINALLY Properly OC'd

shorinman
By shorinman
in Graphics Cards
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Purchased my sig rig April 2012 and always overclocked my 7970 to 1125/1500 at stock voltages.  Never had the guts to go above 1.175V.  Today, I managed to attain a blisteringly fast 1.2Ghz clock speeds.  After enabling non-supported overclocking mode in MSI afterburner I successfully managed to find permanent stability (at least in Tomb Raider) with 1200Mhz at 1.25V.

 

The reason for this post, well, I'm just proud lol.

i5 2500k+Noctua NH-D14 - 8GB HyperX Blu - 240GB PNY XLR8 - Sapphire Reference 7970 - P8Z68-V Pro/Gen 3 - OCZ ZX 850W

 

Unlike *some* people, I do not claim to be an expert computer guru.  When I make mistakes, I apologise and I own up to them.  Then, I continue to learn so that I may provide those in need with educated answers to the best of my ability.

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Congrats, yo! As long as the thermals are alright, those voltages are relativeley safe. My 280X ran 1.2V out of the box.

who cares...

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LN2 dat thing and get 1500 mhz pls :P

 

JK grats bro :P  I panic'd the first time I took both my cards to 1.325v lol

Stuff:  i7 7700k @ (dat nibba succ) | ASRock Z170M OC Formula | G.Skill TridentZ 3600 c16 | EKWB 1080 @ 2100 mhz  |  Acer X34 Predator | R4 | EVGA 1000 P2 | 1080mm Radiator Custom Loop | HD800 + Audio-GD NFB-11 | 850 Evo 1TB | 840 Pro 256GB | 3TB WD Blue | 2TB Barracuda

Hwbot: http://hwbot.org/user/lays/ 

FireStrike 980 ti @ 1800 Mhz http://hwbot.org/submission/3183338 http://www.3dmark.com/3dm/11574089

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My 7950 only gets to 1010 core and 1350  on mem. (i haven't tried more, unless you count trying to go 1575 the moment i get the app open. then black screening the moment those clocks are actually put to use)

And that is with 1.25V. You are lucky, congrats.

I wish i could get more than 1.25V fed to my 7950, the temps are at 68C under max load, lots of headroom.

 

Spoiler

Case Bitfenix Ghost, Mobo Asus Maximus VIII Ranger, CPU i7 6700K @4.2 Ghz cooled by Arctic cooling Freezer i30, (barely). GPU Nvidia GTX 970 Gigabyte G1 @1519Mhz core, RAM 16Gb Crucial Ballistix CL16 @2400Mhz. SSD 128GB Sandisk Ultra Plus as my OS drive. HDD's  1TB  Seagate ST31000524AS its OEM, 3TB Seagate Barracuda, 2x 500GB WDC Blue (RAID 0)

If it isn't working absolutely perfectly, according to all your assumptions, it is broken.

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Purchased my sig rig April 2012 and always overclocked my 7970 to 1125/1500 at stock voltages.  Never had the guts to go above 1.175V.  Today, I managed to attain a blisteringly fast 1.2Ghz clock speeds.  After enabling non-supported overclocking mode in MSI afterburner I successfully managed to find permanent stability (at least in Tomb Raider) with 1200Mhz at 1.25V.

 

The reason for this post, well, I'm just proud lol.

mine is 1.25v out of the box!

My Setup :P

Spoiler

Skylake: I7-6700|MSI B150 GAMING M3|16GB GSKILL RIPJAWS V|R9 280X (WILL BE 1070)|CRUCIAL MX300 + WD BLACK 1TB

 

 

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My 7950 only gets to 1010 core and 1350  on mem. (i haven't tried more, unless you count trying to go 1575 the moment i get the app open. then black screening the moment those clocks are actually put to use)

And that is with 1.25V. You are lucky, congrats.

I wish i could get more than 1.25V fed to my 7950, the temps are at 68C under max load, lots of headroom.

 

You should drop it to 1.2v or 1.15v, but i guess your card is voltage locked. 

| Intel i7-3770@4.2Ghz | Asus Z77-V | Zotac 980 Ti Amp! Omega | DDR3 1800mhz 4GB x4 | 300GB Intel DC S3500 SSD | 512GB Plextor M5 Pro | 2x 1TB WD Blue HDD |
 | Enermax NAXN82+ 650W 80Plus Bronze | Fiio E07K | Grado SR80i | Cooler Master XB HAF EVO | Logitech G27 | Logitech G600 | CM Storm Quickfire TK | DualShock 4 |

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You should drop it to 1.2v or 1.15v, but i guess your card is voltage locked. 

Why would i drop the voltage? The GPU isn't running hot, and now at leas i can get SOME kind of an OC (the stock speed being 980Mhz). Is there any other way to OC an AMD card besides AMD overdrive? If anything i want more voltage.

 

Spoiler

Case Bitfenix Ghost, Mobo Asus Maximus VIII Ranger, CPU i7 6700K @4.2 Ghz cooled by Arctic cooling Freezer i30, (barely). GPU Nvidia GTX 970 Gigabyte G1 @1519Mhz core, RAM 16Gb Crucial Ballistix CL16 @2400Mhz. SSD 128GB Sandisk Ultra Plus as my OS drive. HDD's  1TB  Seagate ST31000524AS its OEM, 3TB Seagate Barracuda, 2x 500GB WDC Blue (RAID 0)

If it isn't working absolutely perfectly, according to all your assumptions, it is broken.

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Why would i drop the voltage? The GPU isn't running hot, and now at leas i can get SOME kind of an OC (the stock speed being 980Mhz). Is there any other way to OC an AMD card besides AMD overdrive? If anything i want more voltage.

 

You can try Msi Afterburner unofficial overclocking like TS did.

 

My card Boost BIOS came with 1.25v default voltage. It's not really stable @1ghz but when i changed to normal BIOS with 1.125v default votlage, it can do 1050mhz rock stable.

| Intel i7-3770@4.2Ghz | Asus Z77-V | Zotac 980 Ti Amp! Omega | DDR3 1800mhz 4GB x4 | 300GB Intel DC S3500 SSD | 512GB Plextor M5 Pro | 2x 1TB WD Blue HDD |
 | Enermax NAXN82+ 650W 80Plus Bronze | Fiio E07K | Grado SR80i | Cooler Master XB HAF EVO | Logitech G27 | Logitech G600 | CM Storm Quickfire TK | DualShock 4 |

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Loved my older 7950, 1.109v @ stock 900Mhz, pushed to 1225mhz /w under 1.3v

^Rev 1.0 Gigabyte WIndforce (Voltage Unlocked)

 

I did see months later when building that all GB cards were locked and set to 1.256v @ stock. Giving faster temp increases @ similar settings to my old one.

Truly shining example of GPU mastery is the HD7950 :)

Maximums - Asus Z97-K /w i5 4690 Bclk @106.9Mhz * x39 = 4.17Ghz, 8GB of 2600Mhz DDR3,.. Gigabyte GTX970 G1-Gaming @ 1550Mhz

 

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I'm only at 1.25V and basically hovering around 65/68 degrees at 99% load.. Going to try to bump my way up to 1.3Ghz.  I'll chime in to see how that goes.  Funny thing, I am getting strange artifacting as we speak right now on this forum simply typing even though I've already downtuned the card.. Hopefully I haven't broken anything.  Ah well.  Sapphire accepts up to 1.35V so if anything goes south I will claim the card under warranty.  Still have 10 months left on it.

i5 2500k+Noctua NH-D14 - 8GB HyperX Blu - 240GB PNY XLR8 - Sapphire Reference 7970 - P8Z68-V Pro/Gen 3 - OCZ ZX 850W

 

Unlike *some* people, I do not claim to be an expert computer guru.  When I make mistakes, I apologise and I own up to them.  Then, I continue to learn so that I may provide those in need with educated answers to the best of my ability.

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I got to 1.25Ghz @ 1.30V, and have tried going right to 1.3Ghz... no dice.  Will chime back in (if anyone really cares) if I get anywhere else.  For now, that was a rock solidly stable 1.25Ghz for a good 10-15 minute gameplay session in Tomb Raider without any errors, crashes, bugs, or artifacts.  

i5 2500k+Noctua NH-D14 - 8GB HyperX Blu - 240GB PNY XLR8 - Sapphire Reference 7970 - P8Z68-V Pro/Gen 3 - OCZ ZX 850W

 

Unlike *some* people, I do not claim to be an expert computer guru.  When I make mistakes, I apologise and I own up to them.  Then, I continue to learn so that I may provide those in need with educated answers to the best of my ability.

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My Sapphire Dual-X 7970 can't go above 1.15Ghz even at 1.3v So that's a very good overclock.

See, I was thinking of selling to get a non-reference 7970 but after you have told me this, maybe not?

i5 2500k+Noctua NH-D14 - 8GB HyperX Blu - 240GB PNY XLR8 - Sapphire Reference 7970 - P8Z68-V Pro/Gen 3 - OCZ ZX 850W

 

Unlike *some* people, I do not claim to be an expert computer guru.  When I make mistakes, I apologise and I own up to them.  Then, I continue to learn so that I may provide those in need with educated answers to the best of my ability.

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mine is 1.25v out of the box!

Really?  I can't seem to get MSI to let me go above 1.3V (to 1.35).  But stock it came out of the box at 1.175V.

i5 2500k+Noctua NH-D14 - 8GB HyperX Blu - 240GB PNY XLR8 - Sapphire Reference 7970 - P8Z68-V Pro/Gen 3 - OCZ ZX 850W

 

Unlike *some* people, I do not claim to be an expert computer guru.  When I make mistakes, I apologise and I own up to them.  Then, I continue to learn so that I may provide those in need with educated answers to the best of my ability.

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Really?  I can't seem to get MSI to let me go above 1.3V (to 1.35).  But stock it came out of the box at 1.175V.

yes ive oced 100mhz so far

My Setup :P

Spoiler

Skylake: I7-6700|MSI B150 GAMING M3|16GB GSKILL RIPJAWS V|R9 280X (WILL BE 1070)|CRUCIAL MX300 + WD BLACK 1TB

 

 

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Here's a screen shot of what I've been playing at for the past 2 hours.

Tomb Raider.bmp

i5 2500k+Noctua NH-D14 - 8GB HyperX Blu - 240GB PNY XLR8 - Sapphire Reference 7970 - P8Z68-V Pro/Gen 3 - OCZ ZX 850W

 

Unlike *some* people, I do not claim to be an expert computer guru.  When I make mistakes, I apologise and I own up to them.  Then, I continue to learn so that I may provide those in need with educated answers to the best of my ability.

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