Memory Bandwidth

[imported_Seer]

Originally posted by: wizboy11

Originally posted by: Seer
Rerun your test with your cpu running at the same speed as the cpu in those other tests. Pref. the same core, too. You will see lower results.

I know it would be lower. I'm just saying, since I'm running at DDR500 at low latencies I really have no need to upgrade to AM2 since my Bandwidth is about what the DDR2 bandwidth would be.

No, probably not...

I guess what I should have said is that ddr2 bandwidth would most likely be higher on your setup than ddr bandwidth on your setup, because a faster processor allows better utilization.

Note: I agree with the views expressed here that AM2 offers little performance advantage, but I'm not talking about performance, just bandwidth.

 

[PingSpike]

I feel like I'm in a tough spot. I thouht about snagging some more DDR while it was cheap and then waiting for X2s to drop in price, but the speculation that AMD will actually raise prices on s939 X2s to make the AM2 parts look better seems sound. And since the X2s are already to pricey for me, I'd just end up stuck with a bunch of old tech ram that I can't use in a different build.

But by the same token, I don't feel like jumping on AM2 any time soon, if at all. In order to avoid a performance loss against existing s939 setups, I have to buy at least DDR2 800 memory with good latencies...which currently costs about twice as much as DDR. No savings there either. Plus that route would involve buying a new motherboard, cpu AND ram all at once. And since buying old tech hasn't really served me that well in that paste, I've decided that I'm just going to upgrade graphics cards and sit on my single core venice and my wife's single core sempron. And the 1gig of ram in both machines should probably do the job.

I'll wait maybe a year from now and see what the landscape looks like then. If AMDs new stuff coming out looks like its competive I might consider waiting for that. If not, conroe's will probably be somewhat mature by that point and hopefully DDR2 prices will have settled down to close to what DDR1 prices are now. I want to go dual core soon, but its benefits are still kind of minor to me at this point and I don't feel like getting saddled with a bunch of parts I can't transfer to new systems.

 

[Zebo]

I don't know how you can beat this.

2 GB 2-3-2 LL ram for $130

or

1GB 2-2-2 LL ram for $89

Both will beat or tie low latency capable (but not low enough) DDR2 costing more than four as much!! 2GB 3-3-3 DDR2 800 for ~$540 Four times as much for same or worse performances? I don't think so.

Remeber here http://images.anandtech.com/reviews/cpu/amd/am2-ram/stockperformance.png anand did not OC the DDR and it's still within 1-6% of highly clocked OCZ XTC. up HTT a bit with either of those two DDR modules and it will trump the $540 DDR2.

 

[RichUK]

I don?t understand why everyone is hypothesizing that AMD will in fact increase prices on their s939 line when AM2 is launched. There has been no word and nothing to point towards these claims. IIRC AMD has the complete intention to run s939 production throughout the rest of this year side by side with AM2, if this is the case, and if they don?t move current products onto the Sempron line, then how and why would this hold true.

I mean even the inq hasn?t tried to speculate on this matter yet.

 

[PingSpike]

Originally posted by: RichUK
I don?t understand why everyone is hypothesizing that AMD will in fact increase prices on their s939 line when AM2 is launched. There has been no word and nothing to point towards these claims. IIRC AMD has the complete intention to run s939 production throughout the rest of this year side by side with AM2, if this is the case, and if they don?t move current products onto the Sempron line, then how and why would this hold true.

I mean even the inq hasn?t tried to speculate on this matter yet.

Well, haven't some AMD parts seen slight increases? Like I said I keep going back and forth...if I knew s939 X2 prices were going to drop I would just snag 2GB of DDR now and wait for a cheap X2. Then I'd sit on that for...a couple years probably! But if I'm not going to get good prices on the s939 X2s then I might as well just move to AM2. And if I'm buying new ram and a new motherboard at the same time, I might as well just buy a fvcking conroe because they're suppose to be cheaper.

What really annoys me is I have to choose a route now, because DDR is probably going to go up in price soon.

 

[Dribble]

Originally posted by: jiffylube1024
DDR2 is higher latency memory for starters (I believe DDR2 800 MHz runs at 4-4-4 timings).

Correct me if I am wrong but the timings are depenent on clock speed so DDR2 800 at 4-4-4 has the same latancies as DDR 400 at 2-2-2 but twice the throughput.

Zebo you mention the DDR2 800 with 3-3-3 timings being bad - is that not the same as DDR 400 at 1.5-1.5-1.5 timings only twice the throughput?