fix(data/gpu): write sub-GB memory sizes in binary GB

120 records stored a sub-GB size as MB/1000 (0.512 for 512 MB). 549
records, and the collector, use MiB/1024 (0.5). These now use MiB/1024
too: 0.512 becomes 0.5, 0.256 becomes 0.25, 0.064 becomes 0.0625, and
so on. The two 0.062 values were 64 MiB cut to three decimals and become
0.0625. The STG-2000's 1 MB stays 0.001, because 1/1024 is below the
validator's floor of 0.001.

Refs #296

Author: Seungpyo1007

data/gpu/3dfx/1996/consumer/voodoo-graphics-4-mb.json

@@ -9,7 +9,7 @@
   "stream_processors": 1,
   "rt_cores": null,
   "tensor_cores": null,
-  "memory_gb": 0.004,
+  "memory_gb": 0.00390625,
   "memory_type": "EDO",
   "memory_bus_bit": 128,
   "memory_bandwidth_gbps": 0.8,

data/gpu/3dfx/1996/consumer/voodoo-graphics.json

@@ -9,7 +9,7 @@
   "stream_processors": null,
   "rt_cores": null,
   "tensor_cores": null,
-  "memory_gb": 0.004,
+  "memory_gb": 0.00390625,
   "memory_type": "EDO DRAM",
   "memory_bus_bit": 128,
   "memory_bandwidth_gbps": 0.8,

data/gpu/3dfx/1997/consumer/voodoo-rush.json

@@ -9,7 +9,7 @@
   "stream_processors": null,
   "rt_cores": null,
   "tensor_cores": null,
-  "memory_gb": 0.006,
+  "memory_gb": 0.005859375,
   "memory_type": "EDO DRAM",
   "memory_bus_bit": 64,
   "memory_bandwidth_gbps": 0.4,

data/gpu/3dfx/1998/consumer/voodoo-banshee-agp-16-mb.json

@@ -9,7 +9,7 @@
   "stream_processors": 1,
   "rt_cores": null,
   "tensor_cores": null,
-  "memory_gb": 0.016,
+  "memory_gb": 0.015625,
   "memory_type": "SDR",
   "memory_bus_bit": 128,
   "memory_bandwidth_gbps": 1.6,

data/gpu/3dfx/1998/consumer/voodoo-banshee-pci-16-mb.json

@@ -9,7 +9,7 @@
   "stream_processors": 1,
   "rt_cores": null,
   "tensor_cores": null,
-  "memory_gb": 0.016,
+  "memory_gb": 0.015625,
   "memory_type": "SDR",
   "memory_bus_bit": 128,
   "memory_bandwidth_gbps": 1.6,

data/gpu/3dfx/1998/consumer/voodoo-banshee.json

@@ -9,7 +9,7 @@
   "stream_processors": null,
   "rt_cores": null,
   "tensor_cores": null,
-  "memory_gb": 0.016,
+  "memory_gb": 0.015625,
   "memory_type": "SDRAM",
   "memory_bus_bit": 128,
   "memory_bandwidth_gbps": 1.7,

data/gpu/3dfx/1998/consumer/voodoo2-12-mb.json

@@ -9,7 +9,7 @@
   "stream_processors": 1,
   "rt_cores": null,
   "tensor_cores": null,
-  "memory_gb": 0.012,
+  "memory_gb": 0.01171875,
   "memory_type": "EDO",
   "memory_bus_bit": 192,
   "memory_bandwidth_gbps": 2.16,

data/gpu/3dfx/1998/consumer/voodoo2-8-mb.json

@@ -9,7 +9,7 @@
   "stream_processors": 1,
   "rt_cores": null,
   "tensor_cores": null,
-  "memory_gb": 0.008,
+  "memory_gb": 0.0078125,
   "memory_type": "EDO",
   "memory_bus_bit": 192,
   "memory_bandwidth_gbps": 2.16,

data/gpu/3dfx/1998/consumer/voodoo2.json

@@ -9,7 +9,7 @@
   "stream_processors": null,
   "rt_cores": null,
   "tensor_cores": null,
-  "memory_gb": 0.012,
+  "memory_gb": 0.01171875,
   "memory_type": "EDO DRAM",
   "memory_bus_bit": 192,
   "memory_bandwidth_gbps": 2.1,

data/gpu/3dfx/1999/consumer/velocity-100.json

@@ -9,7 +9,7 @@
   "stream_processors": 1,
   "rt_cores": null,
   "tensor_cores": null,
-  "memory_gb": 0.008,
+  "memory_gb": 0.0078125,
   "memory_type": "SDR",
   "memory_bus_bit": 128,
   "memory_bandwidth_gbps": 2.288,