Bit Tech published a handful of photos of the upcoming 55nm GeForce 9800 GTX+. Other reports weren't specific about the new card's memory speed but Bit Tech says the model they saw used Samsung chips rated for 1.2GHz - that's 100MHz more than the memory on the 65nm GeForce 9800 GTX.
Well, it would be cooler, but the 9800 GTX+ is clocked even higher than the old GTX with a core speed of 738MHz, up from 675MHz - a 9.3 percent increase. Shader clocks have also been increased from 1,688MHz to 1,836MHz (an increase of 8.8 percent), and GDDR3 memory remains around the 1.0-1.2GHz (2.0-2.4GHz effective) speed.
The memory chips have changed from Samsung on the 9800 GTX to Hynix H5RS5223CFR-N2C in our 9800 GTX+ sample which is rated for 1.2GHz (2.4GHz).
It's $229 price will place the 9800 GTX+ directly between the "more expensive" (we'll see) HD 4870 (whenever that arrives - it completely depends on GDDR5 availability) and the HD 4850 at $199, although we expect AMD to drop the price of the HD 4850 in response to this.
Here's a photo of the Leadtek 9800 GTX and the new 9800 GTX+, there's not much difference though on the outside: