diff --git a/README.md b/README.md
index 78f5f030f828edf6647f14f9adea1110ce461c0e..a9d6e9bfbb64269fde74f806d821916cb6e7b817 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,9 @@
 |2,117|[mpipi2.c](MPI/mpipi2.c)|C, MPI, 10 nodes, 96 cores/node<br>mpicc mpipi2.c -o mpipi2 -O3 -ffast-math|Intel 2x Xeon Platinum 8175M|October, 2019|
 |2,102|[mpipi2.py](Python/mpipi2.py)|Python, Numba, MPI<br>10 nodes, 96 cores/node|Intel 2x Xeon Platinum 8175M|February, 2020|
 |1,635|[cudapi.cu](CUDA/cudapi.cu)|C++, CUDA, 5120 cores|NVIDIA V100|March, 2020|
+|1,595|prior|IBM Blue Gene/P|C, MPI, 4096 processes|prior|
 |1,090|[numbapig.py](Python/numbapig.py)|Python, Numba, CUDA, 5120 cores|NVIDIA V100|March, 2020|
+|811|prior|Cray XT4|C, MPI, 2048 processes|prior|
 |315|[numbapip.py](Python/numbapip.py)|Python, Numba, parallel, fastmath<br>96 cores|Intel 2x Xeon Platinum 8175M|February, 2020|
 |272|[threadpi.c](C/threadpi.c)|C, 96 threads<br>gcc threadpi.c -o threadpi -O3 -ffast-math -pthread|Intel 2x Xeon Platinum 8175M|June, 2019|
 |267|[threadpi.cpp](C++/threadpi.cpp)|C++, 96 threads<br>g++ threadpi.cpp -o threadpi -O3 -ffast-math -pthread|Intel 2x Xeon Platinum 8175M|March, 2020|
@@ -32,11 +34,23 @@
 |3.29|[pi.js](Node/pi.js)|Node|Intel i7-8700T|December, 2018|
 |3.12|[clusterpi.js](Node/clusterpi.js)|Node, 1 worker|Intel i7-8700T|December, 2018|
 |1.78|[threadpi.c](C/threadpi.c)|C, 4 threads<br>gcc threadpi.c -o threadpi -O3 -ffast-math -pthread|Raspberry Pi 4|December, 2020|
+|0.851|prior|Connection Machine CM-2|C, 32k processors|prior|
 |0.57|[pi.c](C/pi.c)|C<br>gcc pi.c -o pi -lm|Intel i7-8700T|November, 2018|
 |0.47|[numpi.py](Python/numpi.py)|Python, NumPy|Intel i7-8700T|November, 2018|
+|0.148|prior|IBM ES/9000|C|prior|
+|0.134|prior|Pentium III|C|prior|
+|0.118|prior|Cray Y-MP4/464|C, vector|prior|
 |0.074|[pi.c](C/pi.c)|C<br>gcc pi.c -o pi -lm -O3 -ffast-math|Raspberry Pi Zero|December, 2020|
 |0.029|[pi.py](Python/pi.py)|Python|Intel i7-8700T|November, 2018|
+|0.013|prior|Intel Pentium Pro|C|prior|
+|0.010|prior|Cray Y-MP4/464|C, scalar|prior|
 |0.006|[pi.ino](Arduino/pi.ino)|Arduino, floats|ESP32-WROOM|December, 2020|
+|0.001|prior|Sun SPARCStation 1|C|prior|
+|0.001|prior|DEC VAX 8650|C|prior|
+|0.0007|prior|Intel 486|C|prior|
+|0.00003|prior|Sun 3/60|C|prior|
+|0.00003|prior|Intel 286|C|prior|
+|0.000001|prior|Intel 8088|C|prior|
 
 |estimated GFlops|estimated GFlops/W|code|description|system|date|
 |---|---|---|---|---|---|