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Some sandy bridge q and a

S

ShuttleLuv

Supreme [H]ardness
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When do you guys predict sandy will be in stock at newegg? And can I carry over my DDR 1333 that oc's good to a sandy bridge good?
 
On phone but virtually all ram should work 1333. Oc is via multi, so ram isn't touched. You must use divider for ram, as the bclk can be barely touched on sandy bridge.
 
What about timings? Make much difference? I havent checked on that yet. Like Cas 7 vs Cas 9 per se.
 
Yeah i know i just meant does it make a huge difference on sandy as opposed to the old 2.4C days.:cool:
 
ShuttleLuv said:
Yeah i know i just meant does it make a huge difference on sandy as opposed to the old 2.4C days.:cool:
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WinRAR had a significant difference and the rest, not so much from those days.

A good trip down memory lane: http://www.tomshardware.com/reviews/ups-downs,743-6.html (worth it for the b-b-b-b-b-b-b-b-b-but the Athlon XP 3200+ = P4 3.2GHz nonsense that still persists :p)

Most apps saw a 0-2% performance increase and low resolution game benchmarking saw a 2-4% increase on average. I always sat in wonder why people would spend an extra $100 on a faster 2GB memory kit when the same money back then could have bought a couple of speed bin improvement on the CPU, for greater stock speed or greater overclocking headroom. Whenever I asked I never got a sensical answer.
 
hey guys im reading the SB previews, and all of them seem to have only pci-e 8x with dual gpu's. is this true? because if it is then i will sit this one out till they get a mb with 16x on dual gpu's. if not which mb will have 16x with dual gpu's? since this is high end system its a shame that they cant have on all mb have 16x with dual gpu's. you pay big money to have all the bells and whistles, only to have mediocre product. let me know. tia
 
well for starters there was a review done that there isnt a noticeable difference between 16x/16x vs 8x/8x, if you must have 16x/16x then you need to steup to s1366 or wait for the replacement of s1366, s2011
 
Some boards have bridge chips to run multiple x16 slots.

At least one board I've seen is configured x16 + x4 on the 2 PCI-E x16 slots. Not that much better. LOL

Anyways x8/x8 isn't that bad.
 
audirs said:
well for starters there was a review done that there isnt a noticeable difference between 16x/16x vs 8x/8x, if you must have 16x/16x then you need to steup to s1366 or wait for the replacement of s1366, s2011
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hey thanks for the reply audirs. im not saying its bad but like i said before. you buy high end product to have all the bells and whistles to find out that you dont, is really a big disappointment. so one would upgrade to SB and because they like the performance. then a whole new socket comes out that has 16x with dual cards, which is not compatible with your SB, have better performance than 8x with dual cards. so now you have to buy a whole new cpu and mb just to have the performance that you want to begin with. hope im clear with my concerns. all im saying is they could of put more lanes on SB to enable 16x mode with dual cards. also with 580 cards and beyond those cards would need dual 16x just to have the performance that it needs.
 
LGA 1155 is not high end. It's the mainstream socket going forward, much like LGA 1156 was prior.

LGA 2011 is the high end socket.

You should look at PCI-E lane scaling. The differences are very small between x8/x8 and x16/x16. Single cards see around a 2% difference and SLI has virtually no difference.
 
there is no difference NOW.. but we've been stuck in video card limbo for awhile now and with new 28nm manufacturing processes in the pipeline I'm sure the difference between x8 and x16 will start to matter. For people still running socket 775 and not planning to upgrade again for 3 years, this small extra 100 dollar investment to get the full x16 is worth it. It's a shame really.. should be really waiting until socket 2011...but I have this gut feeling that the AMD product is not going to put out otherwise they'd be more forthcoming with information about it and intel won't be in any rush to release the 2011 product, and 6 months will end up being 12.

The only bells and whistles that will be missing on the top end motherboards are pci express 3.0, which really, truly, won't be needed for 2-3 years yet. I just think that within this timeframe, x16 will however be needed, for the 2.0 specs. My board still has pci express 1. chuckle. Can't do any sli with it obviously.
 
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stockwiz said:
there is no difference NOW..
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I honestly don't know what people are expecting. In resolutions used for gaming, rendering is the bottleneck, not the transfer of geometry data to the cards. Worst case is what we have seen for the last several years, a couple of percent using x8/x8 vs x16/x16. Modeling apps and micro benchmarks are a different case, of course.

This is not like getting stuck with x16/x4. That has and still does makes a huge difference, especially on nvidia cards.
 
pxc said:
I honestly don't know what people are expecting. In resolutions used for gaming, rendering is the bottleneck, not the transfer of geometry data to the cards. Worst case is what we have seen for the last several years, a couple of percent using x8/x8 vs x16/x16. Modeling apps and micro benchmarks are a different case, of course.

This is not like getting stuck with x16/x4. That has and still does makes a huge difference, especially on nvidia cards.
Click to expand...

Does required PCIe bandwidth increase as resolution increases, like how higher resolutions need more frame buffer? Or does it not matter?
 
nalc said:
Does required PCIe bandwidth increase as resolution increases, like how higher resolutions need more frame buffer? Or does it not matter?
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There are a lot of variables. Generally no, the same data is sent if the same game quality settings are used in 1024x768, 1920x1200 or 2560x1600.

If the level texture footprint is on the edge of available memory, when choosing a higher resolution, especially with AA enabled, texture swapping may occur and that increases the load on bus. Think like 384MB cards vs 768MB cards using the same GPU. At a certain point, there is "enough" memory for virtually all games. For many games there is no performance difference between 1GB and 2GB cards, for example.

The second case is texture streaming. It is possible that a faster PCI-E bus or more lanes will speed up the transfer. Right now, even on fast cards this difference is pretty minor.

I have some thoughts about why SLI doesn't see a difference, but I'd like to ask someone first. I don't think PCI-E has broadcast traffic, so card 1 gets data from memory, then card 2 does the same thing from the same location. Only one card at a time is able to get data from the same memory location, which creates a bottleneck.
 
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