diff --git a/checkin_notes b/checkin_notes
index fcbc1f6f34..cf9c5ce487 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -6953,3 +6953,9 @@ David  17 Aug 2009
         sched_send.cpp
         sched_types.cpp,h
         sched_version.cpp
+
+David  17 Aug 2009
+    - client: fix calculation of ATI flops
+
+    lib/
+        coproc.cpp,h
diff --git a/lib/coproc.cpp b/lib/coproc.cpp
index e4195e55bd..ccfa94a9d2 100644
--- a/lib/coproc.cpp
+++ b/lib/coproc.cpp
@@ -781,6 +781,6 @@ int COPROC_ATI::parse(FILE* fin) {
 
 void COPROC_ATI::description(char* buf) {
     sprintf(buf, "%s (CAL version %s, %.0fMB, %.0fGFLOPS)",
-        name, version, attribs.localRAM/1024.*1024., flops()
+        name, version, attribs.localRAM/1024.*1024., flops()/1.e9
     );
 }
diff --git a/lib/coproc.h b/lib/coproc.h
index 5e237eda63..788684059f 100644
--- a/lib/coproc.h
+++ b/lib/coproc.h
@@ -260,7 +260,8 @@ struct COPROC_ATI : public COPROC {
     void clear();
     int parse(FILE*);
     inline double flops() {
-		return attribs.numberOfSIMD * attribs.wavefrontSize * 5/2 * attribs.engineClock;
+		return attribs.numberOfSIMD * attribs.wavefrontSize * 2.5 * attribs.engineClock * 1.e6;
+        // clock is in MHz
     }
 };