DFI nForce4: SLI and Ultra for Mad Overclockers
by Wesley Fink on February 5, 2005 9:30 AM EST- Posted in
- Motherboards
Overclocking: DFI nForce4
With DFI's reputation as an overclocker's board, and the incredible range of tweaking options available in the BIOS, everyone is expecting incredible overclocking performance with the new DFI nForce4 boards. They will definitely not be disappointed.
| Front Side Bus Overclocking Testbed | |
| Processor: | Athlon 64 4000+ (2.4GHz, 1MB Cache) |
| CPU Voltage: | 1.55V (default 1.50V) |
| Cooling: | Thermaltake Silent Boost K8 Heatsink/Fan |
| Power Supply: | OCZ Power Stream 520W |
| Memory: | OCZ PC3200 EL Platinum Rev. 2 (Samsung TCCD Memory Chips) |
| Hard Drive: | Seagate 120GB 7200RPM IDE 8MB Cache |
| Maximum OC: (Standard Ratio) |
238x12 (Auto HT, 2-3-2-7, 1T, 2.9V) 2856MHz (+19%) |
| Maximum FSB: (Lower Ratio) |
318x9 (2862MHz) (Auto HT, 2.5-4-3-7, 2.9V) (1:1 Memory, 1T, 2 DIMMs in DC mode) (+59% Bus Overclock) |
The DFI nForce4 boards shredded all previous records with this CPU and memory - reaching the highest overclocks at stock speed and at a lower mulitiplier that we have ever tested with this combination. We have squeaked by the 300 CPU clock frequency (DDR600) in the past, but it always required a 2T command rate. This time, we reached an astounding 318 (DDR636) at 1T, at the rather aggressive memory timings of 2.5-4-3-7 with our standard OCZ PC3200 Platinum Rev.2, which is based on Samsung TCCD chips. This is the highest DDR speed that we have ever reached with this memory or any other double-sided DDR memory.
What impact does 318 have on performance? Quake 3 ran at 642FPS and SiSoft Sandra 2004 standard memory bandwidth was 8,300 MB/s. The Sandra unbuffered memory bandwidth was at 4000 MB/s. All these results are new performance records in our memory testing. The very wide range of memory voltages to 4.0V is particularly useful in reaching the highest possible overclocks, along with a very complete set of memory tweaking options in the BIOS. There is still a huge reserve in the available memory voltage range as we only needed 2.9V to reach these performance levels. Those with exotic cooling will appreciate that the CPU voltage and memory voltage settings on the DFI will give them what they need to squeeze every bit of performance from their CPU and memory.
DFI delayed final release of both nForce4 boards to update some 20 components on the board and to make further modifications to BIOS timings. The goal was to improve memory compatibility and further improve the already stellar overclocking abilities of the engineering sample. Compared to the engineering sample board that we tested, the final retail board is a much better overclocker. The update certainly appears to be a success, and DFI tells us that all retail boards, the boards coming off the line, have the modifications and new BIOS.
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chevas - Tuesday, February 8, 2005 - link
Did I miss something? Why do I not see the A8N-SLI deluxe included in these tests?!?Penth - Tuesday, February 8, 2005 - link
NO SLI Bridge? What am I to do with my Ultra-D now?beany323 - Monday, February 7, 2005 - link
bigtoe36 - Monday, February 7, 2005 - link
many companies have applied chipset tweaks with Asus pioneering PAT on 865PE boards from the onset...seems all of a suden the tier ones are being made to tow the line???ViRGE - Sunday, February 6, 2005 - link
Wesley, that's certainly a very believable story. Though Asus is a very good mobo company, they're also who I would suspect any such complainer to be. They're the most powerful tier 1 last I checked, and most likely to lose SLI sales due to semi-SLI, in part because it wouldn't be like them to release their own semi-SLI board. I'd hate to think that someone is trying to kill the modding community like that though.bbomb - Sunday, February 6, 2005 - link
Nvidia is going to kill off SLI before it even gets off the ground by making it the most insanely difficult and expensive thing for computer users to do. Why cant they make it so that you can just slap in any two nvidia cards and get SLI to work? Why do they have to make it so that motherboards now cost over $250 retail for an SLI version?I pray to god that ATI's version is half the price of Nvidias and allows any two ATI cards to work in an SLI fashion just top put Nvida back in their place. I bet the Nvidia prevents any ATI cards from working in SLI mode on any Nforce chipset should ATI get that to work.
This is what happens when graphics card companies use their chipsets to restrict what computer users can do with that companies video cards. I do belive that Nvidia said that they were two separate businesses but now they must have combined them to place the most restricitons possible through drivers to prevent affordable solutions from coming out.
F you Nvida it's all ATI and Via for me now.
Wesley Fink - Sunday, February 6, 2005 - link
#93 - There was no press at all on the MSI "semi-SLI" Ultra - just a couple of posts on Forums - and nVidia was all over it. MSI said they canned the idea and the nVidia drivers were quickly changed so "semi-sli" would not work with current drivers on the Ultra.I doubt it was the press that caused this to happen. Ultra chip shipments were still going to all the manufacturers after the "mod" article went up on January 18th and there was not one word from nVidia until Friday February 4.
The best we can figure is that a powerful tier 1 manufacturer complained loudly to nVidia late this week that they were losing SLI sales to DFI because of the "illegal" SLI. nVidia was forced to act due to the political clout of this manufacturer.
Of course nVidia had other options as well. They could have decided to lower the price of SLI and discontinue Ultra, which is what we thought would happen.
bigtoe36 - Sunday, February 6, 2005 - link
#93It was all over the forums MSI had a semi SLI board and NV came down on them hard...nothing was in the "official press" though.
I have a feeling a tier 1 has moaned here as DFI are tier 2 and probably had no help designing the board...so pretty much went it alone and designed the board how they wanted to.
I would have thought the best move would have been to lower the cost of SLI and remove the "branding tax" and drop the Ultra chipset.
Still NV make the decissions here not us.
arfan - Sunday, February 6, 2005 - link
likes what i say, nvida is not stupid, i hope via can make sli mobo with cheap pricestephenbrooks - Sunday, February 6, 2005 - link
It's time for another "The message is clear:" thing.If chip manufacturers want to sell different products at different prices they should make sure they use DIFFERENT CHIPS! Nobody can pencil mod across a submicron trace. Why oh why do they do this and then put the lock in software?! I suspect it's because they wanted to be able to make a load of generic chips and brand them as the market demands.
Still... it's stupid! I remember reading AT's article on that pencil mod and had to blink a few times to make sure I was reading it right... :)