Added MI300x to mfu calcs

Author: anthonix

llmc/mfu.h

@@ -46,6 +46,7 @@ static const PerfData HOPPER = {378.f, 756.f, 756.f, 756.f, 1513.f, 1513.f, 1620
 static const PerfData ADA = {82.6f, 165.2f, 165.2f, 330.3f, 330.3f, 660.6f, 2520.f, 512.f};
 static const PerfData RDNA3 = {61.42f, 122.8f, 122.8f, -1.f, -1.f, -1.f, 2500.f, 384.f};
 static const PerfData CDNA2 = {95.7f, 383.0f, 383.0f, -1.f, -1.f, -1.f, 1690.f, 208.f};
+static const PerfData CDNA3 = {122.6f, 980.6f, 980.6f, -1.f, -1.f, -1.f, 2100.f, 304.f};
 static const PerfData GCN5 = {10.75f, 10.75f, 21.5f, -1.f, -1.f, -1.f, 1750.f, 60.f};
 
 typedef struct {
@@ -97,6 +98,7 @@ static GPUEntry gpu_db[] = {
     {"NVIDIA H100 80GB HBM3", &HOPPER, 528, 1830}, // HBM3 = SXM5
     {"Radeon RX 7900 XTX", &RDNA3, 384, 2500},
     {"AMD Instinct MI250X/MI250", &CDNA2, 208, 1690},
+    {"AMD Instinct MI300X", &CDNA3, 304, 2100},
     {"AMD Radeon VII", &GCN5, 60, 1750},
 };