[Kal-EL]

GT300 to Boast Around 256 GB/s Memory Bandwidth
Recently, early-information on NVIDIA's next-generation GT300 graphics processor surfaced, that suggested it to pack 512 shader processors, and an enhanced processing model. A fresh report from Hardware-Infos sheds some light on its memory interface, revealing it to be stronger than that of any production GPU. According to a piece of information that has been doing ping-pong between Hardware-Infos and Bright Side of News, GT300 might feature a 512-bit wide GDDR5 memory interface.

The memory interface in conjunction with the use of the lowest latency GDDR5 memory available, at a theoretical 1000 MHz (2000 MHz DDR) would churn out 256 GB/s of bandwidth, the highest for a GPU so far. Although Hardware-Infos puts the lowest-latency figure at 0.5 ns, the math wouldn't work out. At 0.5 ns, memory with actual clock rate of 1000 MHz would churn out 512 GB/s, so a slight inaccuracy there. Qimonda's IDGV1G-05A1F1C-40X leads production today with its "40X" rating. With these chips across a 512-bit interface, the 256 GB/s bandwidth equation is satisfied. The clock speeds of the memory isn't known just as yet, the above is just an example that uses the commonly available high-performance GDDR5 memory chip. The new GPU, at least from these little information leaks, is shaping up to be another silicon-monstrosity by NVIDIA in the making.

Source: Hardware-Infos

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[Jeffro64]

All I know is i'll be reading many reviews and talking to people that have one before I even thing about it. NVIDIA has ruined it with me for a good while until I see solid proof. I have 3 GTX280's in this rig and can't even play games that one should be able to handle with no problems without a bunch of studdering and freezing going on.

Whats funny is it doesn't do it during benching, but let me try to play a game and they are crap.

[Kal-EL]

Have you tried tweaking the voltages a bit or playing with the gpu clocks. Sometimes you can gain stability in games by messing with SPP voltage, GPU Clocks or system mem timings and speed. Tweak tweak tweak. Also, some in-game settings can relieve game stuttering as well. XP 64 used to relieve studdering with Nvidia cards on some of the older titles too.

But yah, you'd think that getting high power cards like those would yeild great performance out of the box.

[Jeffro64]

Man i've tried everything I can think of.... those problems are even running them OC'd.

They did run UT3 pretty well though.... weird.

[Kal-EL]

Congrats on making member of the month!

[2chesapeakes]

Originally Posted by Jeffro64

All I know is i'll be reading many reviews and talking to people that have one before I even thing about it. NVIDIA has ruined it with me for a good while until I see solid proof. I have 3 GTX280's in this rig and can't even play games that one should be able to handle with no problems without a bunch of studdering and freezing going on.

Whats funny is it doesn't do it during benching, but let me try to play a game and they are crap.

Jeffro,
When I was running my P5Q Deluxe I was running a prime95 24 hour stable 4.0 OC. This was also bench stable. I started to game on the system and 5 minutes in the system would freeze. I had to lower the NB, PLL, and Vdimm volts and I couldgame for hours with issue however the system would fail prime 95 after 1 hour. Stability comes in all forms. Synthetic bench marks and stability testing programs are a good start however 24/7 stability needs all programs to work. After that issue 1 hour prime and then I would test for 24/7 stability and call it good.

[Jeffro64]

Originally Posted by Kal-EL

Congrats on making member of the month!

Whaaaa..... How'd I do that?!?!?:confused:

Anyways.... Thanks bro!

[Jeffro64]

Originally Posted by 2chesapeakes

Jeffro,
When I was running my P5Q Deluxe I was running a prime95 24 hour stable 4.0 OC. This was also bench stable. I started to game on the system and 5 minutes in the system would freeze. I had to lower the NB, PLL, and Vdimm volts and I couldgame for hours with issue however the system would fail prime 95 after 1 hour. Stability comes in all forms. Synthetic bench marks and stability testing programs are a good start however 24/7 stability needs all programs to work. After that issue 1 hour prime and then I would test for 24/7 stability and call it good.

Hmmm, Yeah... I guess I could look into lowering some of my voltage and see what will go lower and boot. I got it there and never went back and checked that.