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Asus 1660 (reg) Tuf Gaming OC bios flash questions - please check my work.

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Processor Ryzen 9 3900x @ FCLK 1900
Motherboard B550-I
Cooling H2O. Bykski GPU, Heatkiller IV CPU, HWLabs 280 GTX
Memory 32GB (16x2) 3800CL14 @(14-8-13-11-27)
Video Card(s) TUF-GTX1660-O6G-GAMING
Storage Sabrent Rocket+ 1TB PCIE4.0
Display(s) AOC 24" @144hz
Case Custom
Power Supply SX700
Benchmark Scores Time Spy: 6842 overall, 6267/14266 GPU/CPU. #1 overall for hardware combo
TL;DR. Just wanted to check the following questions:
  1. Am I missing anything?
  2. Any gotchas with the XC Ultra or the XLR8 Gaming OC bios I should look out for?
  3. Anyone successfully cross flash a 1660 Tuf bios? I cannot seem to find any confirmations using my googleFu. In fact, the 1660 regular is generally void of confirmed cross flash confirmations.
GPU in question: TUF-GTX1660-O6G-GAMING

First things first, yes I know the cooler on these cards are the intel knockoff coolers (72-75C on open air test bench). Picked up a Bykski waterblock that should fit (checked with mfg). Not worried about thermals once it goes on. This will have to hold me over until the next series of cards, due to the GPU shortage everything else considered. Bought before the current crop was released, intending to upgrade, and well, ha ha ha. Race what you brought, right?

Current overclock: Custom curve, max 2115MHz core, memory +915. I regularly run into the TDP limit on the card. I know once I go water, that will get me off the fans, freeing up 10w (on a 132 watt power limit) should free up ~7% more headroom. However, seeing how it throttles under load, I expect there is probably more room beyond the card's existing TDP, even by offloading the fan power.

New to bios flashing on the later gen of GPUs. Read the primer. Doesn't look like these bios are modifiable, got it. Thinking all I need to do is make sure I match the following:
Device ID: 10DE 2184 (does the rest, subsystem ID, not matter?)
Ports: 1xDVI-D, 1x DisplayPort, 1x HDMI
Ram speed (& mfg): GDDR5, Micron
Current Bios Link

Candidate Bios links:

EVGA GTX 1660 6 GB (XC Ultra)

  • Limit TDP is 160w, probably pushing, if not exceeding the board VRM's (haven't researched/confirmed yet)
  • Mixed with the fan offset, nets a 38w (28w+10w) higher limit TDP.

PNY GTX 1660 6 GB (XLR8 Gaming OC)

  • Limit TDP is 140w. 8w higher than current bios. Higher default target, but can always go under if I wanted.
  • Mixed with the fan offset, gets me 18w more over stock, if I want to remain conservative

EVGA GTX 1660 6 GB (XC)

  • Max TDP is a 2 watt drop from stock, so no joy here.

GPU-z for crosschecking my work.

GPUz_orig.png

Images of the card and junk, in case someone was curious. Plus, there have only been a few images of teardowns on the card, so figure this will help others in the future.
20210812_173337 - Copy.jpg


The board without the junky Intel knockoff cooler.
20210812_180917 - Copy.jpg


And last but not least, the VRM's. Waterblock should cover these just fine.
20210812_181516 - Copy.jpg
 

eidairaman1

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There must be parity between your original bios and the new bios as of video outputs, the memory brands.

If you increase tdp/power limit you can invariably smoke the vrms.
 
Joined
Sep 2, 2021
Messages
4 (0.00/day)
System Name %test%
Processor Ryzen 9 3900x @ FCLK 1900
Motherboard B550-I
Cooling H2O. Bykski GPU, Heatkiller IV CPU, HWLabs 280 GTX
Memory 32GB (16x2) 3800CL14 @(14-8-13-11-27)
Video Card(s) TUF-GTX1660-O6G-GAMING
Storage Sabrent Rocket+ 1TB PCIE4.0
Display(s) AOC 24" @144hz
Case Custom
Power Supply SX700
Benchmark Scores Time Spy: 6842 overall, 6267/14266 GPU/CPU. #1 overall for hardware combo
There must be parity between your original bios and the new bios as of video outputs, the memory brands.

If you increase tdp/power limit you can invariably smoke the vrms.
Noted on parity. The three candidate ones match on video outputs and memory brands (micron)

The board layout is identical to the GTX 1660 Super Phoenix (images link) with the following changes:
  • Similar 4-phase VRM, uP9512R, ferrite core chokes, however power stages are On Semiconductor NCP302150, instead of the SiC638's. Both stages are 50a.
  • Memory is a single phase unit. Didn't get a good enough photo of the VRM there, but I don't think that will be much of a concern. From what I understand GDDR5 is more power hungry than GDDR6, so I assume it is probably a beefier or similar single stage unit. It seems to be running fine with my +915 oc.
Now that I've looked back over my pictures and checked the VRM, in theory, I should at least be able to push up to the limit TDP of the 1660 Super Phoenix (150w), fairly safely. Surprisingly, they share the same junk cooler, but the super has a higher TDP. Aside from GDDR6, bios, and other minor changes, the two cards are pretty similar.
 
Last edited:

eidairaman1

The Exiled Airman
Joined
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Messages
42,204 (6.64/day)
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System Name PCGOD
Processor AMD FX 8350@ 5.0GHz
Motherboard Asus TUF 990FX Sabertooth R2 2901 Bios
Cooling Scythe Ashura, 2×BitFenix 230mm Spectre Pro LED (Blue,Green), 2x BitFenix 140mm Spectre Pro LED
Memory 16 GB Gskill Ripjaws X 2133 (2400 OC, 10-10-12-20-20, 1T, 1.65V)
Video Card(s) AMD Radeon 290 Sapphire Vapor-X
Storage Samsung 840 Pro 256GB, WD Velociraptor 1TB
Display(s) NEC Multisync LCD 1700V (Display Port Adapter)
Case AeroCool Xpredator Evil Blue Edition
Audio Device(s) Creative Labs Sound Blaster ZxR
Power Supply Seasonic 1250 XM2 Series (XP3)
Mouse Roccat Kone XTD
Keyboard Roccat Ryos MK Pro
Software Windows 7 Pro 64
Noted on parity. The three candidate ones match on video outputs and memory brands (micron)

The board layout is identical to the GTX 1660 Super Phoenix (images link) with the following changes:
  • Similar 4-phase VRM, uP9512R, ferrite core chokes, however power stages are On Semiconductor NCP302150, instead of the SiC638's. Both stages are 50a.
  • Memory is a single phase unit. Didn't get a good enough photo of the VRM there, but I don't think that will be much of a concern. From what I understand GDDR5 is more power hungry than GDDR6, so I assume it is probably a beefier or similar single stage unit. It seems to be running fine with my +915 oc.
Now that I've looked back over my pictures and checked the VRM, in theory, I should at least be able to push up to the limit TDP of the 1660 Super Phoenix (150w), fairly safely. Surprisingly, they share the same junk cooler, but the super has a higher TDP. Aside from GDDR6, bios, and other minor changes, the two cards are pretty similar.
Well you can flash it, just keep it cool
 
Joined
Sep 2, 2021
Messages
4 (0.00/day)
System Name %test%
Processor Ryzen 9 3900x @ FCLK 1900
Motherboard B550-I
Cooling H2O. Bykski GPU, Heatkiller IV CPU, HWLabs 280 GTX
Memory 32GB (16x2) 3800CL14 @(14-8-13-11-27)
Video Card(s) TUF-GTX1660-O6G-GAMING
Storage Sabrent Rocket+ 1TB PCIE4.0
Display(s) AOC 24" @144hz
Case Custom
Power Supply SX700
Benchmark Scores Time Spy: 6842 overall, 6267/14266 GPU/CPU. #1 overall for hardware combo
Just wanted to update. Got everything on water. I was able to get everything flashed over. Still working on the clocks.
 

eidairaman1

The Exiled Airman
Joined
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Messages
42,204 (6.64/day)
Location
Republic of Texas (True Patriot)
System Name PCGOD
Processor AMD FX 8350@ 5.0GHz
Motherboard Asus TUF 990FX Sabertooth R2 2901 Bios
Cooling Scythe Ashura, 2×BitFenix 230mm Spectre Pro LED (Blue,Green), 2x BitFenix 140mm Spectre Pro LED
Memory 16 GB Gskill Ripjaws X 2133 (2400 OC, 10-10-12-20-20, 1T, 1.65V)
Video Card(s) AMD Radeon 290 Sapphire Vapor-X
Storage Samsung 840 Pro 256GB, WD Velociraptor 1TB
Display(s) NEC Multisync LCD 1700V (Display Port Adapter)
Case AeroCool Xpredator Evil Blue Edition
Audio Device(s) Creative Labs Sound Blaster ZxR
Power Supply Seasonic 1250 XM2 Series (XP3)
Mouse Roccat Kone XTD
Keyboard Roccat Ryos MK Pro
Software Windows 7 Pro 64
Baby steps
 
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