• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

2 different GPU on different cable to same monitor?

Joined
Aug 27, 2015
Messages
555 (0.18/day)
Location
In the middle of nowhere
System Name Scrapped Parts, Unite !
Processor Ryzen 5 3600 @4.0 Ghz
Motherboard MSI B450-A Pro MAX
Cooling Stock
Memory Team Group Elite 16 GB 3133Mhz
Video Card(s) Colorful iGame GeForce GTX1060 Vulcan U 6G
Storage Hitachi 500 GB, Sony 1TB, KINGSTON 400A 120GB // Samsung 160 GB
Display(s) HP 2009f
Case Xigmatek Asgard Pro // Cooler Master Centurion 5
Power Supply OCZ ModXStream Pro 500 W
Mouse Logitech G102
Software Windows 10 x64
Benchmark Scores Minesweeper 30fps, Tetris 40 fps, with overheated CPU and GPU
so here it is,
currently I set RX 480 as mining GPU, while R7 250X used for Dota 2
the problem is, if my computer booted on with DVI cable plugged into R7 250X my mining speed went down to 4MH/s until I moved my DVI cable from R7 250X into RX 480 and it went back to normal speed again (25MH/s)

So, what would happen if I connect RX 480 to my monitor using DVI cable and R7 250X with VGA cable?

RX 480 will mine at full speed IF i boot computer without any connection from GPU to monitor

or is there any workaround for this?
 
Joined
Oct 2, 2015
Messages
2,994 (0.96/day)
Location
Argentina
System Name Ciel
Processor AMD Ryzen R5 5600X
Motherboard Asus Tuf Gaming B550 Plus
Cooling ID-Cooling 224-XT Basic
Memory 2x 16GB Kingston Fury 3600MHz@3933MHz
Video Card(s) Gainward Ghost 3060 Ti 8GB + Sapphire Pulse RX 6600 8GB
Storage NVMe Kingston KC3000 2TB + NVMe Toshiba KBG40ZNT256G + HDD WD 4TB
Display(s) AOC Q27G3XMN + Samsung S22F350
Case Cougar MX410 Mesh-G
Audio Device(s) Kingston HyperX Cloud Stinger Core 7.1 Wireless PC
Power Supply Aerocool KCAS-500W
Mouse EVGA X15
Keyboard VSG Alnilam
Software Windows 11
Try to use afterburner or any other overclock software to disable idle clocks.
Having 2 gpus on the same monitor is not harmful thou, it's like having 2 monitors.
 
Joined
Aug 27, 2015
Messages
555 (0.18/day)
Location
In the middle of nowhere
System Name Scrapped Parts, Unite !
Processor Ryzen 5 3600 @4.0 Ghz
Motherboard MSI B450-A Pro MAX
Cooling Stock
Memory Team Group Elite 16 GB 3133Mhz
Video Card(s) Colorful iGame GeForce GTX1060 Vulcan U 6G
Storage Hitachi 500 GB, Sony 1TB, KINGSTON 400A 120GB // Samsung 160 GB
Display(s) HP 2009f
Case Xigmatek Asgard Pro // Cooler Master Centurion 5
Power Supply OCZ ModXStream Pro 500 W
Mouse Logitech G102
Software Windows 10 x64
Benchmark Scores Minesweeper 30fps, Tetris 40 fps, with overheated CPU and GPU
the miner is registered on startup item, so its put load on the GPU right after loading into windows desktop
 
Joined
Feb 19, 2006
Messages
6,270 (0.94/day)
Location
New York
Processor INTEL CORE I9-9900K @ 5Ghz all core 4.7Ghz Cache @1.305 volts
Motherboard ASUS PRIME Z390-P ATX
Cooling CORSAIR HYDRO H150I PRO RGB 360MM 6x120mm fans push pull
Memory CRUCIAL BALLISTIX 3000Mhz 4x8 32gb @ 4000Mhz
Video Card(s) EVGA GEFORECE RTX 2080 SUPER XC HYBRID GAMING
Storage ADATA XPG SX8200 Pro 1TB 3D NAND NVMe,Intel 660p 1TB m.2 ,1TB WD Blue 3D NAND,500GB WD Blue 3D NAND,
Display(s) 50" Sharp Roku TV 8ms responce time and Philips 75Hz 328E9QJAB 32" curved
Case BLACK LIAN LI O11 DYNAMIC XL FULL-TOWER GAMING CASE,
Power Supply 1600 Watt
Software Windows 10
so here it is,
currently I set RX 480 as mining GPU, while R7 250X used for Dota 2
the problem is, if my computer booted on with DVI cable plugged into R7 250X my mining speed went down to 4MH/s until I moved my DVI cable from R7 250X into RX 480 and it went back to normal speed again (25MH/s)

So, what would happen if I connect RX 480 to my monitor using DVI cable and R7 250X with VGA cable?

RX 480 will mine at full speed IF i boot computer without any connection from GPU to monitor

or is there any workaround for this?
Your method will work and be free for you and work just as well as a dummie dongle.
 

cdawall

where the hell are my stars
Joined
Jul 23, 2006
Messages
27,680 (4.27/day)
Location
Houston
System Name All the cores
Processor 2990WX
Motherboard Asrock X399M
Cooling CPU-XSPC RayStorm Neo, 2x240mm+360mm, D5PWM+140mL, GPU-2x360mm, 2xbyski, D4+D5+100mL
Memory 4x16GB G.Skill 3600
Video Card(s) (2) EVGA SC BLACK 1080Ti's
Storage 2x Samsung SM951 512GB, Samsung PM961 512GB
Display(s) Dell UP2414Q 3840X2160@60hz
Case Caselabs Mercury S5+pedestal
Audio Device(s) Fischer HA-02->Fischer FA-002W High edition/FA-003/Jubilate/FA-011 depending on my mood
Power Supply Seasonic Prime 1200w
Mouse Thermaltake Theron, Steam controller
Keyboard Keychron K8
Software W10P
Yea the AMD cards are dumb and need a dummy dongle to work correctly.
 
Top