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1900xt512 or 1950xt256 - Page 3

post #21 of 30
Quote:
Originally Posted by Malaziel View Post
Well actually the extra memory will make no difference at higher resolutions unless he is also using a lot of antialiasing. Almost no games that I have tested used more than 256mb of video memory at 1920x1200 with 4xAA. The only games that did were games that specifically require 512 mb of Vram for certain settings such as GRAW, Quake 4, and COD2.
If it's of interest, I've ran every Doom 3 engine game (Doom 3/ROE, Quake 4, Prey, etc.) on Ultra or highest settings without a hiccup at 1440 x 900/4xAA at a good solid 60FPS. D3 and Q4 specifically say they use more than 500 megs of memory due to uncompressed textures. They don't say that has to be on your VRAM. As far as I can tell, having good RAM running at tight timings/1:1 makes it possible to page texture files to your system's RAM without consequence. That's just a theory though. My G.Skill HZ's are running at over 900mhz in 1:1, not sure of the settings.
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post #22 of 30
The X1950XT definatly
post #23 of 30
Quote:
Originally Posted by Penicilyn View Post
The X1950XT definatly
Wrong. The X1900XT 512MB has much more potential.
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post #24 of 30
Quote:
Originally Posted by bigvaL View Post
There IS an X1900XT 256MB and an X1900XT 512MB.

X1900XTX 512MB > X1950XT

The "extra speed" of the X1950XT is nothing. The fact that it uses GDDR4 and has fast memory doesn't help it. The GDDR3 at 1550mhz on the XTX beats out the 1800mhz GDDR4 ram. It's like any ram. The GDDR4 is faster but the latency is higher.

The X1900XTX falls 1-5 FPS short of the X1950XTX in most tests. The GDDR4 is at 2000mhz on the X1950XTX and it barely helps.
the x1950xt also uses gddr3 not gddr4. it's the x1950xtx that uses gddr4. also latency isn't the end all of performance.


Quote:
Well an X1900XT 512MB is basically an XTX with a slight downclock.

To answer the question: Get the X1900XT 512MB and OC it.
not quite. the xtx has gddr4, 512mb of ram, faster mem and gpu speeds while the xt has only 256mb of ram little slower ram and gpu speeds and gddr3.


Quote:
I was thinking X1950XTX and I didn't even check to make sure. I don't believe that the memory latency is LOWER on the X1950XT because that doesn't make any sense. I am 100% sure that an X1900XTX beats and X1950XT because I've already done the testing so that would be divine intervention if the X1950XT had lower latencies.
ok so you posted and corrected. if you want though to compare the two as far as latency goes open up ati tool and see what your latency is. I can give my stock latency as well and we can compare or I can show you my modified latency as well. your call. not trying to call your out or say your lying just think it would be good reference.

Quote:
Wrong. The X1900XT 512MB has much more potential.
I'm willing for comparison here as well if you want to. again not saying your lying just haven't heard much about the 1900 and so figure this would be good comparison.
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post #25 of 30
The x1900xt has more overclocking potential on the core. As far as I've seen, x1900 cores scale better than the ones in x1950s. x1950 cards have better memory, since I have not seen a x1900 reach more than 900MHz. Core OCs seem to be more effective than RAM OCs, so I guess a x1900 at 750/900 would perform better than a x1950 at 700/1100 in actual gaming environments. The extra Ram will do little unless you play at 1600x1050 or greater resolutions with +4xAA, but will ultimately give it the edge.


http://www.gpureview.com/show_cards....=377&card2=467
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post #26 of 30
Quote:
Originally Posted by Melcar View Post
The x1900xt has more overclocking potential on the core. As far as I've seen, x1900 cores scale better than the ones in x1950s. x1950 cards have better memory, since I have not seen a x1900 reach more than 900MHz. Core OCs seem to be more effective than RAM OCs, so I guess a x1900 at 750/900 would perform better than a x1950 at 700/1100 in actual gaming environments. The extra Ram will do little unless you play at 1600x1050 or greater resolutions with +4xAA, but will ultimately give it the edge.


http://www.gpureview.com/show_cards....=377&card2=467
Most X1900's won't do 750 on the core. 710-730 would be a closer 'average' range.
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post #27 of 30
Quote:
Originally Posted by Mootsfox View Post
Most X1900's won't do 750 on the core. 710-730 would be a closer 'average' range.
That was just an example. The point is that it comes down to memory vs. core overclocks.
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post #28 of 30
Quote:
Originally Posted by Melcar View Post
That was just an example. The point is that it comes down to memory vs. core overclocks.
I will agree that this card series is very depent on core speeds. If you look at benchmarks between the X1900XT 256mb and the X1900XTX, when running at the same core clocks, run at the same speed.
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post #29 of 30
Both Melcar and Moot just laid it down perfectly. The 1950 refresh was more for power savings/testing their DDR4 ability over performance. Core is about 70-80% weighted over memory unless you're really cranking up the AA from my personal experience, then it is more like 60/70% weighted.
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post #30 of 30
Thread Starter 
my 1900xt fell through it skyrocketed at the end , i did pick up a 7800gt for 80 though so just keep the one i got and sli them, see how well that does i used the card comparison posted earlier and it looked promising so we will see how it goes
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