May 20, 201214 yr As Ivy Bridge's new memory controller can now handle RAM with very fast speeds, I was wondering what any of the hardware guru's think of it's importance. I have seen some threads where users have seen 4-5fps improvements with ultrafast RAM. As I am currently running 1866 mhz, and Newegg has some 2400 mhz kits available for prices that aren't outrageous, would this be a worthwhile upgrade? I'd also be interested in the general discussion on whether or not this is important to FSX. Any opinions or theories?
May 20, 201214 yr Just an opinion - in SB and IB remember the FSB is fixed which usually determines RAM speed. So fast RAM (low latency) may not make that much impact. PLUS!!, you now have 4 channels between the cpu and RAM which should in theory result in a performance boost over SB which only had 2 channels - shouldn't it? Any apps/code or data leaving the cpu to the RAM will transfer at the speed of the FSB ie in the case of SB/IB, ie 100Mhz. As far as I can see, all fast RAM will do is speed up the transfer (within the RAM) of the code/working set to the assigned internal memory addresses but once its done that, any code/instructions, etc will still be transferred back to the cpu at FSB speed at the same old 100Mhz. IMHO in SB/IB the cpu and its caches are far more efficient than previous cpu's and are less reliant on RAM transfers for performance gains than previous models. That's probably why Intel now clock the cpu core and not the FSB. gains Regards pH
May 20, 201214 yr With IB's thermal perf what it is, I'm wondering if a better way to decide SB vs IB is the memory issue versus raw clock speed. Run IB at a more comfortable 4.4Ghz or so, then use fastest memory available, 1T command rate, fast timings and end up with something pretty decent. Won't have bragging rights for high over clocks, but in the end might have a very smooth functional system. Be nice and pricey to have the Extreme version, which is hard to beat for optimizing timings. Noel System: 9900X3D Noctua NH-D15 G2, MSI Pro 650-P WiFi, G.SKILL 64GB (2 x 32GB) 288-Pin PC RAM DDR5 6000, WD NVMe 2Tb x 1, Sabrent NVMe 2Tb x 1, RTX 4090 FE, Corsair RM1000W PSU, Win11 Home, LG Ultra Curved Gsync Ultimate 3440x1440, Phanteks Enthoo Pro Case, TCA Boeing Edition Yoke & TQ, Cessna Trim Wheel, RTSS Framerate Limiter w/ Front Edge Sync. Aircraft used in MSFS 2024: Fenix A320, Aerosoft CRJ, FBW, WT 787X, I-Fly 737 MAX 8, Citation Longitude.
May 20, 201214 yr As someone else said it's twelve & half a dozen. A bit from the faster RAM and a bit from the IPC and a 4.4GHz IB should match a SB @ about 4.7GHz. We still need to know more about what PCIe 3.0 brings to the table though
May 21, 201214 yr Author @Noel: Do you have snow in California? I thought this forum was for clever FSX/hardware folks, not so I guess... Forget IB, why try babbling yourself into some delusion about it? That seems a bit nasty, doesn't it? I seems a bit early to say that IB isn't any good. I can say that from my my experience, Ivy is running a much more flyable sim. In the NGX At fsdt KDFW with 100% traffic and AS2012 running, I'm getting a perfectly smooth 18-20 fps. That's a lot more than I could ever say about SB, which leads me to believe that there might be something to this thing. As someone else said it's twelve & half a dozen. A bit from the faster RAM and a bit from the IPC and a 4.4GHz IB should match a SB @ about 4.7GHz. We still need to know more about what PCIe 3.0 brings to the table though It seems like it might be worth running some tests with the higher speed stuff. I suppose I'll be a guinea pig :D
Create an account or sign in to comment