7811 RAM type

It's DDR3 right? At 1066 mhz. When I use CPU-Z, it says it's DDR2 memory. Why is that?

 

its backwards compatable, u must have ddr2 memory, use crucials scanner from thier website, it will tell u what u have and what u can take

 

I remember when the 7811 was first released CPU-Z mis-identified the 1066 memory because it was so new, so some folks here actually pulled the sticks and found that indeed it was DDR3. It's easy to get to; take a peek.

 

I guess I will. I open it all the time anyway. Is it just written somewhere?

Oh, and ddr3 is backwards compatible w/ ddr2? I didn't know that. So ddr3 just has like an extra pin then, and everything else is same as ddr2?

 

DDR3 is not backwards compatible with DDR2. They have many differences, including physical ones that prevent interoperability.

 

Yeah, this.

4GB singular DDR3 SO-DIMMs are still extremely expensive. Make due with 4GB total for now.

 

Eh? I wasn't thinking about getting 8GB of RAM. Just wanted to know why the ram type and clock frequency were different than they should be in CPU-Z. Last time I checked, 4GB SO-DIMMs were like $500. Do we even know if the 78xxs can use ore than 4GB? I wonder if anyone has even tested it.

 

there is honestly no reason to switch out the memory (it is DDR3, and no its not backward compatible). although these notebooks will see up to 8GB of memory in a 64 bit OS (Make sure you are using a 64 bit OS before buying more memory), you honestly aren't going to see any real difference.

 

An 8GB kit from Corsair is down to about $800.00. Still way to expensive in my opinion. I'm hoping when Intel releases their new mobile CPUs late this year it'll drive the price down.

 

I've got a couple of these arriving tomorrow:

http://www.ewiz.com/detail.php?name=W1066SB4GH

Not too bad of price if they work. I'll let everyone know what happened after installation and testing.

 

Yes, each stick should have a small paper label, but you may have to remove one to see it if it's on the "off" side. 99.9% it's going to be DDR3, however, unless someone messed up during your machine's assembly... my guess is CPU-Z is still mis-IDing fast RAM.

 

I dont even think thats possible. They would have had to put a board in that supports ddr2 instead. I could see this happening in prebuilt desktops, but not in laptops where the case is designed to fit each board.

 

Please do.

 

I am wondering what the timings and command rate......

 

Well, I slapped in the 8GB of ram this afternoon and got tired of waiting for any errors to show up after 5+ hours. Looks like these 2 sticks are keepers and I'm a happy camper so far. Now I can't wait to slap in my $210 T9800 and my $100 Blu-ray combo drive to pretty much complete this laptop's transformation. My total investment will be a tad over $1700. I suppose I could've just bought an equivalent laptop for a little more dough already put together, but what fun would that have been?! I'll be selling my old ram and cpu too -- so that's also a bonus.

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P-7805u FX (TD Refurb) | P8400 | (2) Hitachi 320GB 7200 RPM Raid 0 | 8GB RAM | 9800M GTS (no O/C) | LG 1920x1200 WUXGA | Vista x64 Home Premium | 9C.17.00 BIOS | (future upgrades pending)

 

5.2 seems a bit low for the WEI, if you could get the numbers from CPU-z please. I'm again interested in the timings and command rate.............

 

That score is held back by the stock CPU, everything else is 5.9. Does anyone know what my soon-to-be added T9800 will score? I believe the new ram's timings are 7-7-7-20.

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P-7805u FX (TD Refurb) | P8400 | (2) Hitachi 320GB 7200 RPM Raid 0 | 8GB RAM | 9800M GTS (no O/C) | LG 1920x1200 WUXGA | Vista x64 Home Premium | 9C.17.00 BIOS | (future upgrades pending)

 

Thanks, The Hynix chipset is suppsed to be that from what I've seen but the stock ram here is also command rate 1T, I am wondering if this is the same with those too............

 

The command rate is greyed out and blank in CPU-z. Is there another free program that will give this reading?
__________________________
P-7805u FX (TD Refurb) | P8400 | (2) Hitachi 320GB 7200 RPM Raid 0 | 8GB RAM | 9800M GTS (no O/C) | LG 1920x1200 WUXGA | Vista x64 Home Premium | 9C.17.00 BIOS | (future upgrades pending)

 

sisoft sisandra ??????

 

Ok, here's a snippet from Sisoft Sandra:
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P-7805u FX (TD Refurb) | P8400 | (2) Hitachi 320GB 7200 RPM Raid 0 | 8GB RAM | 9800M GTS (no O/C) | LG 1920x1200 WUXGA | Vista x64 Home Premium | 9C.17.00 BIOS | (future upgrades pending)

 

Very cool..............

 

I ran the benchmark an identical results, so the speed is awesome. My question then is now that you have had a day to play with the system are you noticing any differences? Now that I have Windows 7 in my system I rarely see even over 1.6 Gigs used.

With so little ram used is going to 8 gigs from 4 gigs realy usefull other than running a ton of apps or say huge image/video file editing etc. I'd love to see some of the cas6 or cas 5 DDR3's support right in SPD rather than having to be overclocked using the Intel utility............

 

I'm not too familiar with Windows 7, but I know Vista likes to superfetch your most commonly used applications and games. You probably already know that it dynamically watches what you're doing, and then based on whatever heuristic it uses, pre-loads those applications during start-up so that when you actually need them, their startup happens in an instant. With 8GB instead of 4GB, Vista can not only pre-load more applications you commonly use, but it can allocate more memory to each of these applications. Your paging file will pretty much never get touched either. My boot-up time is at least 10 or 15 seconds faster also.

Probably the main reason (it's a dumb one - I know) I upgraded the ram, and I'm not justifying or bragging here, is my rig could take 8GB so I went for it because I could afford it and found a decent deal. There could be debates all over the place about 8GB over 4GB and whether it's necessary or worth it, but I refuse to get into that type of discussion because it would be kinda like arguing religion or politics.

__________________________
P-7805u FX (TD Refurb) | P8400 CPU | (2) Hitachi 320GB 7200 RPM Raid 0 | HL-CT10N Blu-Ray BD-ROM | 8GB RAM | 9800M GTS (no O/C) | LG 1920x1200 WUXGA | Vista x64 Home Premium | 9C.17.00 BIOS | (T9800 CPU upgrade pending)

 

I am not going to debate whether it is worth it or not just wondering if under standard install if it makes a difference. With vist a I would guess it does as Vista is a huge resource hog, as everyone knows.

Windows 7 memory management is a huge improvement over Vista's. My guess then is the larger memory will make less of a difference there. Even though not neccesary I will eventually go to 8 gigs as well for future proofing. Personally I'll need to se the price come down a bit more though.

 

Honestly, in my opinion......8GB is overkill. Vista isnt that bad on memory....if you look under taskmanager, most of it is cached.

When you are running the bare minimum, say 1GB, and upgrade to 2-4GB, you'll see a big difference. but unless you are into heavy duty video/photo/audio editing, the memory that comes with these notebooks is more than adequate.

 

They are down to 242.99 a stick, 485.98 a pair, just starting to get tempting. to be honest I'd have to see 300.00 or so a pair. Same with a T9900, when we see them at 300.00 it will be a buy for me...........

 

http://www.ewiz.com/detail.php?name=W1066SB4GH

237.99 each now or 475.98 for the pair

Well Vista is not too much a memory hog, yea right. Agreed it is cached memory but you can watch the foot print just grow and grow. Win7 is much better at memory management hands down. It is also better with other resources as can be shown by most getting better fram rates in games and the few benchmarks I've run are better as well.

Agreed casual use, especially with Win7, will not get much use of a jump from 4-8 Gigs. But that is today, tomorrow may be another story both for apps and games. With x64 and larger memory addressing this may be a reality sooner than later too............

 

hey there -- are you still happy with this memory? i was thinking of getting some. it's down to 139 now and i'm wondering why so cheap -- good deal, or is there something up with it??

does yours have 8 chips each side (16 total) or 4 chips (8 total).

thx