Edit Memory timings on HD 7970 Oc With Boost Bios

seanmac · Nov 7, 2013

Hi Guys !

I have been having fun over-clocking my Sapphire HD7970 OC With Boost however, no luck with getting the memory over 1450 without on screen corruption or freeze in my games. I have tried flashing compatible Bios from the Tech Powerup VGA Bios collection but no luck.I have tried upping the mem voltage and it doesn't help.

I have read that some of the guys on this forum are real wiz-kids with editing VGA Bios. Could anyone here edit the RAM timings on the VGA Bios of my card. I believe that with the timing relaxed a little i could overlcock this VRAM no problems.

I can't seem to upload the Bios on here for some reason so here is the link for the Bios on the Techpowerup VGA Bios database

http://www.techpowerup.com/vgabios/130020/sapphire-hd7970-3072-120925.html

Thanks in advance for your advice and help.

Cheers :toast:

seanmac · Nov 8, 2013

*Bump* Any wizards out there that can edit memory timings in VGA Bios ? :wtf:

buildzoid · Nov 8, 2013

See if you can't boost the voltage on the VRAM to 1.65V because I haven't ever heard of changing VRAM timings.

Ja.KooLit · Nov 8, 2013

buildzoid said:
See if you can't boost the voltage on the VRAM to 1.65V because I haven't ever heard of changing VRAM timings.

havent heard as well VRAM timings...

to OP, dont just boost voltage if your card is not well cooled.....

you dont want a fried chip right?

The only I read about Vbios editing is the stock clocks, fan profile, core voltage, memory voltage, and UEFI-GOP.....

VRAM timings? no......

buildzoid · Nov 8, 2013

All VRAM will survive 1.65V however make sure that it's 1.65V to the memory and not the GPU core because if you set 1.65V on the core then core goes Bye Bye

Frogger · Nov 8, 2013

buildzoid said:
I haven't ever heard of changing VRAM timings.

The last ATI card that you could edit ram timings on was the X800/850 cards :ohwell:

After that it just got to complex

MxPhenom 216 · Nov 8, 2013

You dont change vram timings so dont try.

seanmac · Nov 9, 2013

I'm very careful with voltages. My board has VRAM voltage locked at 1.688.

I saw darkmhz has had a few requests in his VBE Bios editor thread regarding timings so i've sent him a PM regarding this.

System Name	The FlaMING Flogger
Processor	Devil's Canyon i7 4790k @ 4.7
Motherboard	Asus Maximus VII Ranger
Cooling	Corsair H100i (CPU) Kraken G10 with Corsair H55 (GPU)
Memory	16 GB G Skill Trident 2400
Video Card(s)	Galaxy GTX 970 Reference running at 1500MHz Core / 1950MHz memory
Storage	OCZ 248 GB SSD X 2 in RAID 0
Case	NZXT H440 Red / Black
Audio Device(s)	Supreme FX On board
Power Supply	OCZ-ZT 650W Bronze Rating
Software	Windows 8.1 Pro

System Name	The FlaMING Flogger
Processor	Devil's Canyon i7 4790k @ 4.7
Motherboard	Asus Maximus VII Ranger
Cooling	Corsair H100i (CPU) Kraken G10 with Corsair H55 (GPU)
Memory	16 GB G Skill Trident 2400
Video Card(s)	Galaxy GTX 970 Reference running at 1500MHz Core / 1950MHz memory
Storage	OCZ 248 GB SSD X 2 in RAID 0
Case	NZXT H440 Red / Black
Audio Device(s)	Supreme FX On board
Power Supply	OCZ-ZT 650W Bronze Rating
Software	Windows 8.1 Pro

System Name	TITAN Slayer / CPUCannon / MassFX
Processor	i7 5960X @ 4.6Ghz / i7 3960x @5.0Ghz / FX6350 @ 4.?Ghz
Motherboard	Rampage V Extreme / Rampage IV Extreme / MSI 970 Gaming
Cooling	Phanteks PHTC14PE 2.5K 145mm TRs / Custom waterloop / Phanteks PHTC14PE + 3K 140mm Noctuas
Memory	Crucial 2666 11-13-13-25 1.45V / G.skill RipjawsX 2400 10-12-12-34 1.7V / Crucial 2133 9-9-9-27 1.7V
Video Card(s)	3 Fury X in CF / R9 Fury 3840 cores 1145/570 1.3V / Nothing ATM
Storage	500GB Crucial SSD and 3TB WD Black / WD 1TB Black(OS) + WD 3TB Green / WD 1TB Blue
Display(s)	LG 29UM67 80Hz/Asus mx299q 2560x1080 @ 84Hz / Asus VX239 1920x1080 @60hz
Case	Dismatech easy v3.0 / Xigmatek Alfar (Open side panel)
Audio Device(s)	M-audio M-track / realtek ALC 1150
Power Supply	EVGA G2 1600W / CoolerMaster V1000 / Seasonic 620 M12-II
Mouse	Mouse in review process/Razer Naga Epic 2011/Razer Naga 2014
Keyboard	Keyboard in review process / Razer Blackwidow Ultimate 2014/Razer Blackwidow Ultimate 2011
Software	Windows 7 Ultimate / Windows 7 ultimate / Windows 7 ultimate
Benchmark Scores	cinebench 15.41 3960x @ 5.3ghz Wprime32m 3.352 3960x @ 5.25ghz Super PI 32m: 6m 42s 472ms @5.25ghz

System Name	Gen2
Processor	Ryzen R9 5950X
Motherboard	Asus ROG Crosshair Viii Hero Wifi
Cooling	Lian Li 360 Galahad
Memory	G.Skill Trident Z RGB 64gb @ 3600 Mhz CL14-13-13-24 1T @ 1.45V
Video Card(s)	Sapphire RX 6900 XT Nitro+
Storage	Seagate 520 1TB + Samsung 970 Evo Plus 1TB + lots of HDD's
Display(s)	Samsung Odyssey G7
Case	Lian Li PC-O11D XL White
Audio Device(s)	Onboard
Power Supply	Super Flower Leadex SE Platinum 1000W
Mouse	Xenics Titan GX Air Wireless
Keyboard	Kemove Snowfox 61
Software	Main: Gentoo+Arch + Windows 11
Benchmark Scores	Have tried but can't beat the leaders :)

System Name	TITAN Slayer / CPUCannon / MassFX
Processor	i7 5960X @ 4.6Ghz / i7 3960x @5.0Ghz / FX6350 @ 4.?Ghz
Motherboard	Rampage V Extreme / Rampage IV Extreme / MSI 970 Gaming
Cooling	Phanteks PHTC14PE 2.5K 145mm TRs / Custom waterloop / Phanteks PHTC14PE + 3K 140mm Noctuas
Memory	Crucial 2666 11-13-13-25 1.45V / G.skill RipjawsX 2400 10-12-12-34 1.7V / Crucial 2133 9-9-9-27 1.7V
Video Card(s)	3 Fury X in CF / R9 Fury 3840 cores 1145/570 1.3V / Nothing ATM
Storage	500GB Crucial SSD and 3TB WD Black / WD 1TB Black(OS) + WD 3TB Green / WD 1TB Blue
Display(s)	LG 29UM67 80Hz/Asus mx299q 2560x1080 @ 84Hz / Asus VX239 1920x1080 @60hz
Case	Dismatech easy v3.0 / Xigmatek Alfar (Open side panel)
Audio Device(s)	M-audio M-track / realtek ALC 1150
Power Supply	EVGA G2 1600W / CoolerMaster V1000 / Seasonic 620 M12-II
Mouse	Mouse in review process/Razer Naga Epic 2011/Razer Naga 2014
Keyboard	Keyboard in review process / Razer Blackwidow Ultimate 2014/Razer Blackwidow Ultimate 2011
Software	Windows 7 Ultimate / Windows 7 ultimate / Windows 7 ultimate
Benchmark Scores	cinebench 15.41 3960x @ 5.3ghz Wprime32m 3.352 3960x @ 5.25ghz Super PI 32m: 6m 42s 472ms @5.25ghz

System Name	MONEY PIT
Processor	i7-3770K @ 4800 1.20v batch #3231B415 Delided
Motherboard	ASrock Z77 OC Formula w onboard waterblocks
Cooling	Apogee HD, MCP655,rad MCR320-XP,Micro Rev2 res
Memory	G,skill Trident X F3-2400C10D-16GTX
Video Card(s)	EVGA GTX 980 Ti Classified with EK nickel/acetal waterblock installed
Storage	2x120gig Wildfire raid0 2x120gig VERTEX3 raid0
Display(s)	3/ Samsung2343bwx + 65in LG 4K
Case	NZXT Phantom White w/red
Audio Device(s)	ReCon3d fatal1ty pro, Logitech z906 THX
Power Supply	corsair AX860i
Mouse	Rat7
Software	64bit ++++ win 10

System Name	Main Stack (in progress)
Processor	AMD Ryzen 7 9800X3D
Motherboard	Asus X870 ROG Strix-A - White
Cooling	1x Heatkiller 420 Radiator \| TechN AMD Block \| Hard Frosted tubing
Memory	G. Skill Royal 2x24GB 6000Mhz C26 @ 6400
Video Card(s)	Undecided
Storage	Samsung 9100 Gen5 1TB \| Samsung 980 Pro 1TB (Games_1) \| Lexar NM790 2TB (Games_2)
Display(s)	Asus XG27ACDNG 360Hz QD-OLED \| Gigabyte M27Q-P 165Hz 1440P IPS \| LG 24" 1440 IPS 1440p
Case	HAVN HS420 - White
Audio Device(s)	FiiO K7 \| Sennheiser HD650 + Beyerdynamic FOX Mic
Power Supply	FSP Vita 1000w
Mouse	Razer Viper v3 Pro
Keyboard	Corsair K65 Plus 75% Wireless - USB Mode
Software	Windows 11 Pro 64-Bit

Edit Memory timings on HD 7970 Oc With Boost Bios

ASIC Engineer