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The first 1GB versions of the GTX 650 Ti BOOST have hit AIB makers' webpages, and something interesting has emerged: While the 2GB versions had a memory clock of 6008 MHz, the 1GB version is set at 5010 MHz. This results in a 17% reduction of memory bandwidth (from 144GB/s to 120GB/s).

At first I thought this was a typo of some sort, but both EVGA (who have stock and Superclocked 1GB versions) and MSI (with their stock and overclocked 1GB versions) show the same thing.

I can't figure out why exactly this would be. The memory clock of the original GTX 650 Ti (non-BOOST) is 5400 MHz, so it's not an issue of being a "holdover" from the older card. Perhaps this was a component specification sacrifice made in order to put a GK106-240-A1 chip in a card while still having a $150 MSRP?

I wonder what the performance implications will be, especially in the light of competing head-to-head with the $150 1GB Radeon 7790. The $170 2GB version of the 650 Ti-B completely dominated it (and will presumably dominate the $170 2GB 7790), but it's yet to be seen what the reduction of memory clocks will do to the $150 1GB 650 Ti-B in comparison.
Edited by svenge - 4/17/13 at 10:49pm
Julia
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Julia
(11 items)
 
Centurion (Dead)
(11 items)
 
 
CPUMotherboardGraphicsRAM
AMD Athlon 64 3700+ EPoX EP-9NPA+ Ultra EVGA GeForce 6800 GS (256-P2-N389-AX) CORSAIR VS1GB400C3 
Hard DriveOptical DriveOSMonitor
Western Digital Caviar SE WD1600JS NEC ND-3520A Windows XP Dell M780 
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FSP Group SAGA+ 450R Cooler Master Centurion 5 w/ Window (CAC-T05-WW) Samsung Floppy Drive (SFD321B/LBL1) 
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