diff --git a/widget/GfxDriverInfo.h b/widget/GfxDriverInfo.h
--- a/widget/GfxDriverInfo.h
+++ b/widget/GfxDriverInfo.h
@@ -97,10 +97,11 @@
   Bug1137716,
   Bug1116812,
   Bug1155608,
   Bug1207665,
   Bug1447141,
+  NvidiaBlockWebRender,
   DeviceFamilyMax
 };
 
 enum DeviceVendor {
   VendorAll, // There is an assumption that this is the first enum
diff --git a/widget/GfxDriverInfo.cpp b/widget/GfxDriverInfo.cpp
--- a/widget/GfxDriverInfo.cpp
+++ b/widget/GfxDriverInfo.cpp
@@ -318,10 +318,44 @@
       APPEND_DEVICE(0xa001); /* Intel Media Accelerator 3150 */
       APPEND_DEVICE(0xa002);
       APPEND_DEVICE(0xa011);
       APPEND_DEVICE(0xa012);
       break;
+    case NvidiaBlockWebRender:
+      /* GT218 */
+      APPEND_DEVICE(0x0a60);
+      APPEND_DEVICE(0x0a62);
+      APPEND_DEVICE(0x0a63);
+      APPEND_DEVICE(0x0a64);
+      APPEND_DEVICE(0x0a65);
+      APPEND_DEVICE(0x0a66);
+      APPEND_DEVICE(0x0a67);
+      APPEND_DEVICE(0x0a7b);
+      APPEND_DEVICE(0x10c0);
+      APPEND_DEVICE(0x10c3);
+      APPEND_DEVICE(0x10c5);
+      APPEND_DEVICE(0x10d8);
+      /* GT218M */
+      APPEND_DEVICE(0x0a68);
+      APPEND_DEVICE(0x0a69);
+      APPEND_DEVICE(0x0a6a);
+      APPEND_DEVICE(0x0a6c);
+      APPEND_DEVICE(0x0a6e);
+      APPEND_DEVICE(0x0a6f);
+      APPEND_DEVICE(0x0a70);
+      APPEND_DEVICE(0x0a71);
+      APPEND_DEVICE(0x0a72);
+      APPEND_DEVICE(0x0a73);
+      APPEND_DEVICE(0x0a74);
+      APPEND_DEVICE(0x0a75);
+      APPEND_DEVICE(0x0a76);
+      APPEND_DEVICE(0x0a7a);
+      /* GT218GL */
+      APPEND_DEVICE(0x0a78);
+      /* GT218GLM */
+      APPEND_DEVICE(0x0a7c);
+      break;
     // This should never happen, but we get a warning if we don't handle this.
     case DeviceFamilyMax:
       NS_WARNING("Invalid DeviceFamily id");
       break;
   }
diff --git a/widget/windows/GfxInfo.cpp b/widget/windows/GfxInfo.cpp
--- a/widget/windows/GfxInfo.cpp
+++ b/widget/windows/GfxInfo.cpp
@@ -1419,11 +1419,17 @@
 
     ////////////////////////////////////
     // FEATURE_WEBRENDER
 
     // We are blocking all non-Nvidia cards in gfxPlatform.cpp where we check
-    // for the WEBRENDER_QUALIFIED feature
+    // for the WEBRENDER_QUALIFIED feature. However we also want to block some
+    // specific Nvidia cards for being too low-powered, so we do that here.
+    APPEND_TO_DRIVER_BLOCKLIST2(OperatingSystem::Windows10,
+      (nsAString&) GfxDriverInfo::GetDeviceVendor(VendorNVIDIA),
+      (GfxDeviceFamily*)GfxDriverInfo::GetDeviceFamily(NvidiaBlockWebRender),
+      nsIGfxInfo::FEATURE_WEBRENDER, nsIGfxInfo::FEATURE_BLOCKED_DEVICE,
+      DRIVER_LESS_THAN, GfxDriverInfo::allDriverVersions, "FEATURE_UNQUALIFIED_WEBRENDER_NVIDIA_BLOCKED");
 
     // Block all windows versions other than windows 10
     APPEND_TO_DRIVER_BLOCKLIST2(OperatingSystem::Windows7,
       (nsAString&) GfxDriverInfo::GetDeviceVendor(VendorAll), GfxDriverInfo::allDevices,
       nsIGfxInfo::FEATURE_WEBRENDER, nsIGfxInfo::FEATURE_BLOCKED_DEVICE,