diff --git a/checkin_notes b/checkin_notes
index c6420faba6..0ebc4d1032 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -2302,3 +2302,9 @@ David  31 Mar 2010
         gui_rpc_server_ops.cpp
     clientgui/
         MainDocument.cpp
+
+David  31 Mar 2010
+    - client: Fermi compute capability is 2, not 3
+
+    lib/
+        coproc.h
diff --git a/lib/coproc.h b/lib/coproc.h
index 9f69637ad6..27de8dd967 100644
--- a/lib/coproc.h
+++ b/lib/coproc.h
@@ -251,7 +251,7 @@ struct COPROC_CUDA : public COPROC {
         // each processor has 8 or 32 cores;
         // each core can do 2 ops per clock
         //
-        int cores_per_proc = (prop.major>=3)?32:8;
+        int cores_per_proc = (prop.major>=2)?32:8;
         double x = (1000.*prop.clockRate) * prop.multiProcessorCount * cores_per_proc * 2.;
         return x?x:5e10;
     }