DDR is the fatest memory in terms of latency, but DDR3 is the faster memory in terms of Hz...
its all to do with the artitechture DDR3 is meant to be faster and use less power than DDR2 although as with DDR2 the latencys will be higher untill the manufacturing process is improved in the same fashion that the DDR2 manufacturing process has improved.
Yeah, they have reached a barrier where they can't improve the latency anymore. So, GDDR4 isn't much faster than GDDR3 in final performance.
To the OP: GDDR3 is significantly faster than GDDR2 Whatever you do, do not buy a GDDR2 card, if you can avoid it. I don't have exact numbers, but I have heard it can hit performance anywhere from 10-20% slower than similar cards with GDDR3.
Message edited by basketcase on 03-19-2008 at 05:27:11 PM
DDR is the fatest memory in terms of latency, but DDR3 is the faster memory in terms of Hz...
its all to do with the artitechture DDR3 is meant to be faster and use less power than DDR2 although as with DDR2 the latencys will be higher untill the manufacturing process is improved in the same fashion that the DDR2 manufacturing process has improved.
This is false considering latency is measured in the amount of clock cycles, not milliseconds, so the more clock cycles per second, the less time between clock cycles, thus translating into less latency.
This is false considering latency is measured in the amount of clock cycles, not milliseconds, so the more clock cycles per second, the less time between clock cycles, thus translating into less latency.
What? That's just wrong.
To the OP, GDDR3 is MUCH faster than GDDR2. Avoid GDDR2 if you are buying a gaming card.
This is false considering latency is measured in the amount of clock cycles, not milliseconds, so the more clock cycles per second, the less time between clock cycles, thus translating into less latency.
what are you on?
typical DDR3...
1600 hz
latencys, 7-7-7-20
typical DDR2
1066 hz
latencys, 5-5-5-15
typical DDR
400 hz
latencys, 2-3-3-6
as the Hz get faster the latencys get longer this is due to the manufacturing/design process not being good enough to support both.
as the Hz get faster the latencys get longer this is due to the manufacturing/design process not being good enough to support both.
First off i cant seem to post without quoting so sorry for that.
As far as Graphics cards go GDDR 3 is faster than GDDR2 thats just a fact i dont care about latencys.
As far as system ram goes well thats all totally differant and i think you two are maybe getting the two confused ?
Mactronix
as the Hz get faster the latencys get longer this is due to the manufacturing/design process not being good enough to support both.
You misunderstood me. what I'm trying to say is its pointless to get slower memory in an effort to get lower latencies, because 800mhz at a latency of 4 would take the same amount of time to return the data as 1600mhz as a latency of 8.
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GDDR3 and DDR3 are NOT the same thing, for anyone who are not familiar with it, check out Wiki's entry on GDDR3...
GDDR3 is better than GDDR2 or simply DDR2 because they are more optimized for graphics use than DDR memories and can achieve higher frequency than GDDR2/DDR2.
