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Vega 56 on 64 Bios Power Swings

CupONoodles
By CupONoodles
in Graphics Cards
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Hi all, I just got my Vega 56 and after doing control benchmarks I decided to jump straight into doing a Vega 64 Bios Flash. I have an Asrock Phantom Gaming model which as far I know is reference (I mean the cooler is reference so I think it's pretty fair to say).  When I load up the Tomb Raider: DOX demo and sit in the first scene, with clocks in P7 down to 1552 MHz and the power target at +50%, I get wild power consumption occilation and subsequently the clocks follow suit. I should also note that the fans will ramp up and then slowly come down only to ramp up again and repeat. I'm using the Vega 64 LC bios since the other 2 would not give display out when I flashed them. I tested this on the default power saving BIOS and no such issues. Any help would be appreciated :)

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you should have stuck with the stock bios instead if V64 air bios or even V56 high power bios doesn't work. I think what your card goes through is "There's a 3D app running, lets slam the card hard since cooling isnt a problem" "oh shit WTF it's getting mudderfking hot, abort abort abort!" "ok it's not that hot now, work as usual" "it's cooking down here, abort abort abort" etc.

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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That what I was suspecting, I've reverted back to the stock higher power 56 BIOS but do you think lowering the power target would help any?

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