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Crossfire wiring

Queen  Chrysalis
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Hey I'm trying to hook up two RX Vega 64's to my PSU, and I'm wondering if I can wire them in series with 8+8 pin connectors.  Any thoughts?

The sign is a subtle joke. The shop is called "Sneed's Feed & Seed", where feed and seed both end in the sound "-eed", thus rhyming with the name of the owner, Sneed. The sign says that the shop was "Formerly Chuck's", implying that the two words beginning with "F" and "S" would have ended with "-uck", rhyming with "Chuck". So, when Chuck owned the shop, it would have been called "Chuck's Feeduck and Seeduck".

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i hope your not expecting much results from Crossfire vega 64's. Crossfire/NvLink/SLI has never been worth it.

 

Always use individual cables for high end GPU's, it will generally help the GPU and the wires in the long wrong (AKA If your PSU has them, use 4 different PCIE plugs into the PSU.)

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4 minutes ago, Shimejii said:

i hope your not expecting much results from Crossfire vega 64's. Crossfire/NvLink/SLI has never been worth it.

 

Always use individual cables for high end GPU's, it will generally help the GPU and the wires in the long wrong (AKA If your PSU has them, use 4 different PCIE plugs into the PSU.)

Yeah I just found that out the hard way.  The cards are still ok, but I'll have to wait.  I don't have enough pci connectors (curse you modular cables and your ability to get lost!).  I ordered a new PSU anyway, as 1000w will give more breathing room so I can un-un-overclock my 1700 back to 4.0.  With the new PSU, I will have enough connectors.

 

EDIT:  Also, I know what I'm getting.  I want to get a decent framerate in Deus Ex at 3440x1440.  Also, I've heard crossfire and SLI tend to scale better at higher resolutions, not sure how true that is.

The sign is a subtle joke. The shop is called "Sneed's Feed & Seed", where feed and seed both end in the sound "-eed", thus rhyming with the name of the owner, Sneed. The sign says that the shop was "Formerly Chuck's", implying that the two words beginning with "F" and "S" would have ended with "-uck", rhyming with "Chuck". So, when Chuck owned the shop, it would have been called "Chuck's Feeduck and Seeduck".

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1 minute ago, Queen Chrysalis said:

Yeah I just found that out the hard way.  The cards are still ok, but I'll have to wait.  I don't have enough pci connectors (curse you modular cables and your ability to get lost!).  I ordered a new PSU anyway, as 1000w will give more breathing room so I can un-un-overclock my 1700 back to 4.0.  With the new PSU, I will have enough connectors.

I Mean just 5 minutes of research would have shown you that SLI/Crossfire is Garbage for the value, Single fastest card is always the best route

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Just now, Shimejii said:

I Mean just 5 minutes of research would have shown you that SLI/Crossfire is Garbage for the value, Single fastest card is always the best route

Usually yes, but the Vega 64 is the best freesync card you can get, so crossfiring two was the only way to get faster.  That rule of thumb is top never SLI/crossfire unless you have the fastest card you can get and desire more speed.

The sign is a subtle joke. The shop is called "Sneed's Feed & Seed", where feed and seed both end in the sound "-eed", thus rhyming with the name of the owner, Sneed. The sign says that the shop was "Formerly Chuck's", implying that the two words beginning with "F" and "S" would have ended with "-uck", rhyming with "Chuck". So, when Chuck owned the shop, it would have been called "Chuck's Feeduck and Seeduck".

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2 hours ago, Queen Chrysalis said:

Usually yes, but the Vega 64 is the best freesync card you can get, so crossfiring two was the only way to get faster.  That rule of thumb is top never SLI/crossfire unless you have the fastest card you can get and desire more speed.

Yep, I had gotten a pair of VEGA 64's and a 49" Samsung 32:9 format Freesync monitor for a damn good super ultra wide screen gaming experience. Before this, I'd run dual and triple CF setups from the HD5870 onward. last before the VEGA64's was a pair of R9 290X that ran games wonderfully, but I found the 4GB VRAM limitation to be a factor in some games I play at 3440x1440, max ingame (or near max). Do note that I have four rails of 6+2 pin PCIE power cables connected, never use 6pin to 8 pin adapters, and share the rails (run them in series)

akWStVP.jpg

 

This monitor is a QLED SVA 32:9 monitor with 144Hz refresh rate, HDR, Freesync 2 support  (great for FPS like BF series, HL2 series, Mass Effect series, Metro series, Dead Space. Bioshock, Far Cry series, etc) but not great for very fast paced FPS like UT series, Serious Sam (I found it a bit disconcerting as there was simply too much to take in while running around and shooting). Absolutely stunning for racing games though, tried the Forza Horizon demo and it was just awesome.

naxL68Z.jpg

Rig 1: AMD AM4 R9 3900X (12C/24T) + Tt Water 3.0 ARGB 360 AIO | Gigabyte X570 Aorus Xtreme | 16GB Patriot Viper RGB 3600CL17 | Sapphire Nitro+ RX 6900 XT | 256GB Sabrent Rocket NVMe PCIe M.2 (OS) | 4TB Samsung 860 EVO SSD + 2TB 860 QVO SSD + 2x 1TB 850 EVO + 6TB WD Black HDD | CoolerMaster H500M | Corsair HX1000 Platinum | Ducky Shine 4 69 Fire + Logitech G703 | iFi Micro iDSD Black Label | LG SL8YG | C49HG90DME 49" 32:9 144Hz Freesync 2 | Omnidesk Pro 2020 48" | 64bit Win10 Pro

Rig 2: Intel i7 3960X (6C/12T) | Asus R4E | 16GB Corsair Dom Plat 2133mhz | PC RX VEGA 64 Red Devil | iOppo HA-1 | Philips HTL9100 | Caselabs M8 | Seasonic X-1250 | Mistel Barocco MD770 RGB + Logitech G402 | Samsung Acer XR341CK 21:9 75Hz Freesync | 64bit Win10 Pro

HTPC Rig: Intel i7 4770K (4C/8T) | MSI Z87 G45 Gaming | 16GB RipJawsZ 1600mhz | Leadtek GTX 1080 Hurricane OC | Fostex HPA4 | Philips B97/98 | Tt View 31 | Corsair HX-1050 | Logitech G613 + G603 | Panasonic 65" UHD TV | 64bit Win10 Pro

 

 

 

 

 

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