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Thanks for answers.
Its stupid i now! But i will give you an example for how many performance im loosing with this:
TEST 1 --> Only one PCIe (Mastercard X1900CF Edition 512Mb @ 680/830)
--> Slave card not connected (x1900Xt 256Mb)
3dMark06 - SM2 - 2876 points
- SM3 - 3642 points´
On TomsHardware a X1900XT 512mb card should do:
-SM2 - 2468
-SM3 - 3044
Conclusion: Using single card a lit bit overclocled i can do more points than the ones reported on tomsharware.
TEST 2 --> PCIe 1 (Mastercard X1900CF Edition 512Mb @ 680/830)
--> PCIe 2 (Slave card x1900Xt 256Mb @ 680/830)
--> Crossfire only assuming 256Mb (why doest it assume 768?)
3dMark06 - SM2 - 3900 points
- SM3 - 4300 points´
On TomsHardware a X1900XT 512mb card should do:
-SM2 - 4208
-SM3 - 4936
Conclusion: Using Crossfire setup EVEN with overclock i cant do more points than the ones reported on tomsharware. An thats stupid! On single card i did it..."