diff --git a/picosoc/performance.png b/picosoc/performance.png
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Binary files /dev/null and b/picosoc/performance.png differ
diff --git a/picosoc/performance.py b/picosoc/performance.py
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--- /dev/null
+++ b/picosoc/performance.py
@@ -0,0 +1,86 @@
+#!/usr/bin/env python3
+
+import matplotlib.pyplot as plt
+import numpy as np
+
+text = """
+default        : 010f52ef
+dspi-8         : 008dc82f
+dspi-7         : 008d6d63
+dspi-6         : 008d1297
+dspi-5         : 008cb7cb
+dspi-4         : 008c5cff
+dspi-3         : 008c0233
+dspi-2         : 008ba767
+dspi-1         : 008b4c9b
+dspi-crm-8     : 008af1cf
+dspi-crm-7     : 008a9703
+dspi-crm-6     : 008a3c37
+dspi-crm-5     : 0089e16b
+dspi-crm-4     : 0089869f
+dspi-crm-3     : 00892bd3
+dspi-crm-2     : 0088d107
+dspi-crm-1     : 0088763b
+qspi-8         : 004a2c6f
+qspi-7         : 0049d1a3
+qspi-6         : 004976d7
+qspi-5         : 00491c0b
+qspi-4         : 0048c13f
+qspi-3         : 00486673
+qspi-2         : 00480ba7
+qspi-1         : 0047b0db
+qspi-crm-8     : 0047560f
+qspi-crm-7     : 0046fb43
+qspi-crm-6     : 0046a077
+qspi-crm-5     : 004645ab
+qspi-crm-4     : 0045eadf
+qspi-crm-3     : 00459013
+qspi-crm-2     : 00453547
+qspi-crm-1     : 0044da7b
+qspi-ddr-8     : 00288bf5
+qspi-ddr-7     : 00283129
+qspi-ddr-6     : 0027d65d
+qspi-ddr-5     : 00277b91
+qspi-ddr-4     : 002720c5
+qspi-ddr-3     : 0026c5f9
+qspi-ddr-2     : 00266b2d
+qspi-ddr-1     : 00261061
+qspi-ddr-crm-8 : 0025b595
+qspi-ddr-crm-7 : 00255ac9
+qspi-ddr-crm-6 : 0024fffd
+qspi-ddr-crm-5 : 0024a531
+qspi-ddr-crm-4 : 00244a65
+qspi-ddr-crm-3 : 0023ef99
+qspi-ddr-crm-2 : 002394cd
+qspi-ddr-crm-1 : 00233a01
+"""
+
+labels = list()
+values = list()
+
+for line in text.split("\n"):
+    if line != "":
+        line = line.split()
+        labels.append(line[0])
+        values.append(int(line[2], 16))
+
+plt.figure(figsize=(10, 3))
+plt.title("Performance comparison for different PicoSoC SPI flash configurations")
+plt.plot(range(len(labels)), values[0] / np.array(values))
+plt.xticks(range(len(labels)), labels, rotation=90)
+
+for color, x1, x2 in [["black", 0, 0], ["red", 1, 8], ["green", 9, 16],
+        ["red", 17, 24], ["green", 25, 32], ["red", 33, 40], ["green", 41, 48]]:
+    for t in plt.axes().xaxis.get_ticklabels()[x1:x2+1]:
+        t.set_color(color)
+    plt.plot([x1, x1], [0, values[0] / values[x1] - 0.2], color=color)
+    plt.plot([x2, x2], [0, values[0] / values[x2] - 0.2], color=color)  
+    plt.plot([x1], [values[0] / values[x1]], "k.")
+    plt.plot([x2], [values[0] / values[x2]], "k.")
+
+plt.xlim(-1, len(values))
+plt.ylim(0, 9)
+plt.grid()
+
+plt.savefig("performance.png")
+# plt.show()