Highest Mhz DDR3 can reach ever?

[Blackfirevatsal]

Can anyone tell me which is the highest MHz DDR3 memory can reach ever in its lifespan & how much Mhz will be mainstream MHz like 800MHz of in the case of DDR2.

 

[Billb2]

Those questions are impossible to answer.

If anyone knew what CPUs will be available in the future, and what memory would offer the best performance for them they could get rich.

Look at DDR and DDR2 memory's history. When DDR memory was released (100 mhz) who knew that DDR600 would be usefull.

 

[Zap]

I believe JEDEC specifies up to DDR3-1600, with all speeds allowed to have a range of latencies. The "catch" is that the only voltage allowed as part of the standard is 1.5v. Thus, any company selling memory "rated" for a higher voltage is just selling cheaper RAM to you that is "factory overclocked."

 

[taltamir]

Originally posted by: Zap
I believe JEDEC specifies up to DDR3-1600, with all speeds allowed to have a range of latencies. The "catch" is that the only voltage allowed as part of the standard is 1.5v. Thus, any company selling memory "rated" for a higher voltage is just selling cheaper RAM to you that is "factory overclocked."

correct...
And EVERYONE is doing it.

The highest rated DDR3 is indeed DDR-1600 @ 1.5v. Anything above it is factory overclocked, and its impossible to tell how high factory overclocked modules will go. But there is really no reason to buy them as ram SPEED is the least important aspect of your total computer speed. (which is: Ram amount > GPU > CPU > HDD > ram speed)

 

[Blackfirevatsal]

but bro in DDR2 if you shift from 667Mhz to 800mhz to get significant amount of performance gain about 15% , so why will i don't gain between 1600MHz & 2000Mhz?

(i am not an expert, so pls correct me if i am wrong)

 

[DSF]

Originally posted by: Blackfirevatsal
but bro in DDR2 if you shift from 667Mhz to 800mhz to get significant amount of performance gain about 15% , so why will i don't gain between 1600MHz & 2000Mhz?

(i am not an expert, so pls correct me if i am wrong)

Where did you see a 15% performance improvement going from 667 to 800? That's just plain false.

As far as taltamir's progression of what's most important in terms of system speed, that's a question of what you're using the computer for.

 

[Zap]

Originally posted by: Blackfirevatsal
but bro in DDR2 if you shift from 667Mhz to 800mhz to get significant amount of performance gain about 15% , so why will i don't gain between 1600MHz & 2000Mhz?

That's around 15% synthetic speed gain. In real world overall computer performance gain, that's around 0.0428%. :disgust:

Put it this way. It is like if I took a base model Honda Civic and put tires from an s2000 on it. The tires can handle 50% more performance than the stock ones on my Civic, so does this mean my Civic can now go 170MPH?

*Disclaimer: I don't own either vehicle and was using it just as an example.

 

[Blackfirevatsal]

OK!!! that's a new piece of information for me thanks guys

guys can you tell me one thing more?

how much is performance difference between DDR2 at 800MHz & DDR3 at 1600MHz in real world?

 

[Zap]

Originally posted by: Blackfirevatsal
how much is performance difference between DDR2 at 800MHz & DDR3 at 1600MHz in real world?

If you use a synthetic benchmark that measures only memory performance and nothing else, you'll get around 90% more performance.

In everyday use, you'll get around 0.839% overall performance.

I'm obviously completely making up the numbers here, but I suspect they're not too far off. The thing is that once your memory speed gets past the point of being a bottleneck, then any additional gains will not net much more overall performance.

 

[DSF]

On a Core2 platform the difference between DDR3-1600 and DDR2-800 is at most 10%, but that's not in gaming. In games the difference is more like 3-5%, if that.

There are only a few kinds of applications that benefit so heavily from memory bandwidth that they approach that 10% increase.

 

[Blackfirevatsal]

thank guys

 

[Yellowbeard]

FWIW, and IIRC, DDR3 should scale to 3ghz. However, at this time, memory controllers cannot get close to that, and especially in dual channel.

 

[n7]

I'd consider DDR3-1600 the max "standard" speed for now, but that may increase as DDR3 improves.

 

[Blackfirevatsal]

Originally posted by: Yellowbeard
FWIW, and IIRC, DDR3 should scale to 3ghz. However, at this time, memory controllers cannot get close to that, and especially in dual channel.

what is dual channel?