NCIX and LinusTech Does Four Single GPUs... Twice

Subject: General Tech, Graphics Cards | September 11, 2014 - 04:46 PM |
Tagged: quad sli, quad crossfire, nvidia, amd

Psst. AMD fans. Don't tell "Team Green" but Linus decided to take four R9 290X graphics cards and configure them in Quad Crossfire formation. They did not seem to have too much difficulty setting it up, although they did have trouble with throttling and setting up Crossfire profiles. When they finally were able to test it, they got a 3D Mark Fire Strike Extreme score of 14979.

Psst. NVIDIA fans. Don't tell "Team Red" but Linus decided to take four GeForce Titan Black graphics cards and configure them in Quad SLI formation. He had a bit of a difficult time setting up the machine at first, requiring a reshuffle of the cards (how would reordering PCIe slots for identical cards do anything?) and a few driver crashes, but it worked. Eventually, they got a 3D Mark Fire Strike Extreme score of around 13,300 (give or take a couple hundred).

Crysis 3 Hacked to Run at 8K - But Can Anything Power It?

Subject: General Tech | May 7, 2014 - 11:01 AM |
Tagged: quad crossfire, gpu, dual graphics, Crysis 3, 8k, 4k

We’ve seen what happens when you put two monstrous graphics cards together with Ryan’s look at a R9 295X2 CrossFire setup and now here’s something that would challenge even that: Crysis 3 at 8K resolution!

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An enthusiast called "K-putt" has created a hack to allow the 8k setting, and his Flikr gallery has full-res versions of the screenshots. (Be warned - they're HUGE files!) While this likely isn’t practical even with a quadfire setup like we had for those tests (K-putt was only getting 2 FPS with his single-card setup), it’s still very nice to look at!

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The original Crysis became famous as the game that would bring any system to its knees, and now any game can really challenge a system just by adding a 4K monitor. With prices coming down to the sub-$700 range already it won’t be long until a multi-4K monitor setup will actually become feasible.

Here's what comes up under "4k monitor" on Amazon today:

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Prices are dropping! Just be warned: Before attempting anything like this you’d better have the GPU horsepower or it’ll just be a (very pretty) slideshow!

Like a $3000 Double Double; the HD 295X in CrossFire

Subject: General Tech | April 29, 2014 - 03:29 PM |
Tagged: 4k, amd, crossfire, quad crossfire, r9 295x2, radeon, video

Ryan isn't the only crazy one out there stringing 2 PSUs together to power a pair of AMD's massively powerful 295X2s in CrossFire; the gang at [H]ard|OCP did as well after taking the Mickey with a certain Brian.  As with Ryan's experiment they required a second PSU, in this case a 1350W plus an 850W in order to stop the rig from crashing.  Their test components also differed somewhat, a Maximus V Extreme instead of a P9X79 Deluxe and slightly different RAM and Win 8.1 installed on their SSD.  The other reason to check them out is the Eyefinity 5760 x 1200 tests in addition to the 4K tests.

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"Got extra PCIe slots and have no idea what in the world you can do with those? Well if you have $3000 burning a hole in your pocket, wiring in your house that is up to code, a good air conditioning system, and a Type C fire extinguisher that you are not using, AMD's Radeon R9 295X2 QuadFire may be just what the fire marshal ordered."

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Source: [H]ard|OCP
Author:
Manufacturer: AMD

You need a bit of power for this

PC gamers. We do some dumb shit sometimes. Those on the outside looking in, forced to play on static hardware with fixed image quality and low expandability, turn up their noses and question why we do the things we do. It’s not an unfair reaction, they just don’t know what they are missing out on.

For example, what if you decided to upgrade your graphics hardware to improve performance and allow you to up the image quality on your games to unheard of levels? Rather than using a graphics configuration with performance found in a modern APU you could decide to run not one but FOUR discrete GPUs in a single machine. You could water cool them for optimal temperature and sound levels. This allows you to power not 1920x1080 (or 900p), not 2560x1400 but 4K gaming – 3840x2160.

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All for the low, low price of $3000. Well, crap, I guess those console gamers have a right to question the sanity of SOME enthusiasts.

After the release of AMD’s latest flagship graphics card, the Radeon R9 295X2 8GB dual-GPU beast, our mind immediately started to wander to what magic could happen (and what might go wrong) if you combined a pair of them in a single system. Sure, two Hawaii GPUs running in tandem produced the “fastest gaming graphics card you can buy” but surely four GPUs would be even better.

The truth is though, that isn’t always the case. Multi-GPU is hard, just ask AMD or NVIDIA. The software and hardware demands placed on the driver team to coordinate data sharing, timing control, etc. are extremely high even when you are working with just two GPUs in series. Moving to three or four GPUs complicates the story even further and as a result it has been typical for us to note low performance scaling, increased frame time jitter and stutter and sometimes even complete incompatibility.

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During our initial briefing covering the Radeon R9 295X2 with AMD there was a system photo that showed a pair of the cards inside a MAINGEAR box. As one of AMD’s biggest system builder partners, MAINGEAR and AMD were clearly insinuating that these configurations would be made available for those with the financial resources to pay for it. Even though we are talking about a very small subset of the PC gaming enthusiast base, these kinds of halo products are what bring PC gamers together to look and drool.

As it happens I was able to get a second R9 295X2 sample in our offices for a couple of quick days of testing.

Working with Kyle and Brent over at HardOCP, we decided to do some hardware sharing in order to give both outlets the ability to judge and measure Quad CrossFire independently. The results are impressive and awe inspiring.

Continue reading our review of the AMD Radeon R9 295X2 CrossFire at 4K!!

ASUS Officially Launches P9X79-E Workstation Motherboard With 4-Way SLI Support

Subject: Motherboards | April 2, 2013 - 08:27 PM |
Tagged: asus, p9x79-e, workstation, Sandy Bridge E, quad sli, quad crossfire, lga 2011

Earlier this year at CES, ASUS showed off a high-end workstation board called the P9X79-E WS. The board is meant for Sandy Bridge-E processors, but will likely be compatible with Ivy Bridge-E as well. Unlike Wolverine and Zeus, the P9X79-E WS is a motherboard that will actually see the light of day and has been officially launched. It will be available sometime in May at an as-yet-unannounced price.

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The P9X79-E hosts a single LGA 2011 processor, up to 64GB of 2400MHz DDR3, the Intel X79 PCH, and support for 4-Way SLI or CrossFire on four of its seven total PCI-E 3.0 slots. The workstation board uses a 10-layer PCB, ASUS DIGI+ with 10+2 power phases, DR Power PSU monitoring, ASUS SSD Caching II, solid capacitors, and fanless heatsinks connected via copper heatpipes.

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Storage options include six SATA 6Gbps ports, four SATA II 3Gbps ports, and two eSATA ports coming from the front panel header. The rear IO has changed a bit since the board seen at CES, however. The now-official ASUS P9X79-E WS includes the following rear IO options:

  • 1 x PS/2 combo port
  • 10 x USB 2.0 ports (one can be used for BIOS flashing)
  • 2 x USB 3.0 ports
  • 2 x eSATA ports
  • 2 x Gigabit Ethernet ports backed by Intel i210 GbE controller
  • 6 x Analog audio ports
  • 1 x Optical S/PDIF port

The board can accommodate up to four dual slot graphics cards or seven single slot expansion cards (like PCI-E SSDs and RAID controllers). As a workstation board, it is likely to be pricey, but for those that need 4-way SLI and LGA 2011 (possibly for Ivy Bridge-E though its hard to say for sure if that will work yet) it is shaping up to be a good option. As mentioned above, the P9X79-E WS will reportedly be available for purchase in about a month. Sometime in early May or late April, according to Slash Gear.

Source: Asus

Feast your eyes on four overclocked HD7970s crushing benchmarks

Subject: Graphics Cards | February 28, 2012 - 11:28 AM |
Tagged: quad crossfire, hd7970, amd, overclocking

It would be quite the feat to find a case to contain the system below, with four HD7970s powered by two 1200W PSUs plus other assorted components, not to mention the heat this system will produce.  Not even the ASUS MARS 2 in SLI can keep up with this monstrosity and the scaling from a pair of HD7970s is rather impressive as in the past adding the third and fourth card did not lead to large gains.  The Core i7-3960X @ 4.8GHz simply can't keep up with the GPUs, implying that this system could actually be more impressive.  If you want to see $2200+ of GPUs in action then head to OC3D.

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"In combination with ASUS we're rerunning our Quadfire HD7970 test with the benefit of overclocking. Roll up, roll up."

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Source: Overclock3D

Revisiting quad-gpus and the Law of Diminishing Returns

Subject: Graphics Cards | May 24, 2011 - 12:44 PM |
Tagged: quad sli, quad crossfire, sli, crossfire, nvidia, amd

With SLI and CrossFire we all hoped to see direct scaling so that a quad GPU setup would be somewhere in the neighbourhood of 4x better than a single GPU.  That has proven to be incorrect, not only is the scaling nowhere near that it has been discovered that in some cases going beyond 2 GPUs can actually reduce performance.  

As the hardware and drivers evolve, it is worth revisiting the scaling performance of both AMD and NVIDIA which is why [H]ard|OCP grabbed two GeForce GTX 590s and two AMD Radeon HD 6990s, both dual GPU cards.  In three of the five games tested they ran into at least one issue, a strike right off the bat.  Read on to see how they rate the value of the two manufacturers based on the performance they saw once they'd resolved the problems.

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"How does NVIDIA's GeForce GTX 590 SLI Quad-GPU compare to AMD's Radeon HD 6990 CrossFireX Quad-GPU? We will find out if these "if-money-didn't-matter dream video card setups" will deliver the gameplay experience we all expect."

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Source: [H]ard|OCP