- Joined
- Feb 21, 2008
- Messages
- 6,862 (1.17/day)
- Location
- S.E. Virginia
System Name | Barb's Domain |
---|---|
Processor | i9 10850k 5.1GHz all cores |
Motherboard | MSI MPG Z490 GAMING EDGE WIFI |
Cooling | Deep Cool Assassin III |
Memory | 2*16gig Corsair LPX DDR4 3200 |
Video Card(s) | RTX 4080 FE |
Storage | 500gb Samsung 980 Pro M2 SSD, 500GB WD Blue SATA SSD, 2TB Seagate Hybrid SSHD |
Display(s) | Dell - S3222DGM 32" 2k Curved/ASUS VP28UQG 28" 4K (ran at 2k), Sanyo 75" 4k TV |
Case | SilverStone Fortress FT04 |
Audio Device(s) | Bose Companion II speakers, Corsair - HS70 PRO headphones |
Power Supply | Corsair RM850x (2021) |
Mouse | Logitech G502 |
Keyboard | Logitech Orion Spectrum G910 |
VR HMD | Oculus Quest 2 |
Software | Windows 10 Pro 64 bit |
Benchmark Scores | https://www.3dmark.com/spy/34962882 |
Originally Posted by BarbaricSoul
*8/*8 is just fine for crossfireX. His motherboard is plenty capable of tri-fire with a 5970 and either a 5850 or 5870. Keep in mind though, three GPU's don't really add much performance wise, but does do wondering with eliminating micro-stutter if that is a problem.
Quote:
Three- And Four-Way CrossFire
The performance of three- and four-way CrossFire setups not only surprised us, but also managed to utterly convince us that micro-stuttering doesn't have to affect your multi-GPU configuration. For some reason, the third GPU almost always eliminates micro stuttering and has a less-pronounced effect on performance. At least in the games we ran, the fourth GPU is more eye candy than anything, and its contribution is minimal.
From's Tom's
Isn't that what I said?
I don't believe that's entirely accurate. The dual GPU cards like the 5970, 4870 x2. And 3870 x2, all use onboard pci express bridge chips from PLX. The two GPU cores communicate through their own pci express x16 connections provided by that bridge chip. That's why you were able to use these types of cards even in systems with a single pci express slot - systems that did not support crossfire. Or with nvidia chipsets that only supported sli.
The system should indeed be giving each slot x8 speeds, but it should not split from there as it is not necessary.
this is true to my understanding